Electron Micrographs of Viruses

Images depicting the structure of various viruses including smallpox, influenza, swine flu, and COVID-19, captured via electron microscopy.

This negatively-stained transmission electron micrograph (TEM) captured some of the ultrastructural details exhibited by the new influenza A (H7N9) virus. On April 1, 2013, the World Health Organization (WHO) first reported 3 human infections with a new influenza A (H7N9) virus in China. Since then, additional cases have been reported. Most reported cases have severe respiratory illness and, in some cases, have died. At this time, no cases of H7N9 outside of China have been reported. The new H7N9 virus has not been detected in people or birds in the United States. This new H7N9 virus is an avian (bird) influenza (flu) virus. Human infections with avian influenza (AI, or bird flu) are rare but have occurred in the past, most commonly after exposure to infected poultry. However, this is the first time that this bird flu subtype (H7N9) has been found in people. This virus is very different from other H7N9 viruses previously found in birds.

Virus responsible for smallpox. This electron micrograph depicts the variola, smallpox virus using a negative stain technique, Magnification 65,000X. Smallpox is a serious, highly contagious, and sometimes fatal infectious viral disease. There is no specific treatment for smallpox disease, and the only prevention is a smallpox vaccination.

This colorized negative-stained transmission electron micrograph (TEM) depicts the ultrastructural details of a number of influenza virus particles, or virions. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organism. The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent this illness is by getting a flu vaccination each fall.

This colorized negative stained transmission electron micrograph (TEM) depicted some of the ultrastructural morphology of the A/CA/4/09 swine flu virus. Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses cause high levels of illness and low death rates in pigs. Swine influenza viruses may circulate among swine throughout the year, but most outbreaks occur during the late fall and winter months similar to outbreaks in humans. The classical swine flu virus (an influenza type A H1N1 virus) was first isolated from a pig in 1930.

Novel Coronavirus SARS-CoV-2, causes 'coronavirus disease-2019', abbreviated as COVID-19. A transmission electron microscope image shows the virus isolated from a US patient. Virus particles are shown emerging from the surface of cells cultured in the lab. The spikes appear as a turquoise corona on the outer edge, give the corona viruses their name. Colors are artificially assigned to a monotone image for clarity. Image by National Institute of Allergy and Infectious Diseases (NIAID) (BSLOC_2020_2_248)

Rubella virus (rubivirus from the Togaviridae family). Image taken with transmission electron microscopy, (viral diameter around 50 to 70 nm).

The human coronavirus is the cause of respiratory infections (colds), and gastroenteritis. View made from a transmission electron microscopy view. Viral diameter approximately: 80 to 160 nm.

Lassa virus. Transmission electron micrograph (TEM) of the Lassa virus. The single-stranded RNA virus (Arenaviridae) causes Lassa fever which occurs in West Africa.

Zika virus. It is an arbovirus, a member of the Flavivirus family and the Flavivirus genus. Seen by transmission electron microscopy (viral diameter 40 nm).

This negatively-stained transmission electron micrograph (TEM) captured some of the ultrastructural details exhibited by the new influenza A (H7N9) virus. On April 1, 2013, the World Health Organization (WHO) first reported 3 human infections with a new influenza A (H7N9) virus in China. Since then, additional cases have been reported. Most reported cases have severe respiratory illness and, in some cases, have died. At this time, no cases of H7N9 outside of China have been reported. The new H7N9 virus has not been detected in people or birds in the United States. This new H7N9 virus is an avian (bird) influenza (flu) virus. Human infections with avian influenza (AI, or bird flu) are rare but have occurred in the past, most commonly after exposure to infected poultry. However, this is the first time that this bird flu subtype (H7N9) has been found in people. This virus is very different from other H7N9 viruses previously found in birds.

Transmission Electron Micrograph (TEM) of Spanish flu virus. This pandemic virus infected a fifth of the world population and killed between 20 and 50 million. This Influenza virus type a, strain H1N1 is very close to the swine flu (strain H1N1) and the avian flu virus (strain H5N1).

Adenovirus (highly contagious virus), responsible for: Colds, pharyngitis, bronchitis, pneumonia, gastroenteritis, conjunctivitis and keratitis. Image made from a transmission electron microscopy view.

Transmission electron micrograph of HIV-1 virus particles (colorized orange/yellow) replicating from an HIV-infected H9 T-cell (green).

Coronavirus (CoV). viruses of the Coronaviridae family and the Orthocoronavirinae subfamily. It is a pathogen of respiratory syndromes. Viewed from a transmission electron microscopy (TEM) image. Viral diameter 80nm to 100nm.

Negatively-stained transmission electron micrograph of numerous herpes simplex virions, members of the Herpesviridae virus family

Swine Flu Virus TEM

Influenza virus. Image produced using high-dynamic-range imaging (HDRI) from an image taken with transmission electron microscopy. Viral diameter ranges from around 80 to 120 nm.

HPV (Human papillomavirusvirus). The human papillomavirus or papillomavirus is the cause of sexually transmitted infections (condyloma acuminata which can induce cancer of the cervix). They are also the cause of skin infections: warts. View produced from a transmission electron microscopy image. Viral diameter approximately: 55 nm.

Transmission electron micrograph (TEM) of variola viruses, magnification 370,000x. This DNA virus is a Poxvirus (genus orthopoxvirus) that causes smallpox.

This digitally-colorized transmission electron micrograph (TEM) revealed the presence of a number of infectious bronchitis virus (IBV) virions, which are Coronaviridae family members, and members of the genus Coronavirus. IBV is a highly contagious pathogen, which infects poultry of all ages, affecting a number of organ systems including the respiratory and urogenital organs. IBV is categorized as a Group 3 coronavirus member, with a helical genome composed of positive-sense single-stranded RNA ((+) ssRNA). This is an enveloped virus, which means that its outermost covering is derived from the host cell membrane. The coronavirus derives its name from the fact that under electron microscopic examination, each virion is surrounded by a corona or halo. This is due to the presence of viral spike peplomers emanating from its proteinaceous capsid.

Lassa virus. Transmission electron micrograph (TEM) of the Lassa virus. The single-stranded RNA virus (Arenaviridae) causes Lassa fever which occurs in West Africa.

Under a plate magnification of 37,800X, this colorized transmission electron micrograph (TEM) depicted a strain of swine flu, the A/New Jersey/76 (Hsw1N1) virus, while in the virus' first developmental passage through a chicken egg. Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza that regularly cause outbreaks of influenza among pigs. Swine flu viruses cause high levels of illness and low death rates among pigs. Swine influenza viruses may circulate in swine throughout the year, but most outbreaks among swine herds occur during the late fall and winter months similar to humans. The classical swine flu virus (an influenza type A H1N1 virus) was first isolated from a pig in 1930.

Yellow fever. Transmission electron micrograph (TEM) of yellow fever viruses. The yellow fever virus is a flavivirus of the togavirus class. Magnification x 234,000.

Highly magnified cells depict the Lassa virus

Adenovirus. Image produced using high-dynamic-range imaging (HDRI) from an image taken with transmission electron microscopy. Viral diameter ranges from around 80 to 110 nm.

The mumps virus (paramyovirus). Image produced with transmission electron microscope (viral diameter around 200 nm).

Hepatitis C virus (HCV). Image produced using high-dynamic-range imaging (HDRI) from an image taken with transmission electron microscopy. Viral diameter around 22 nm.

Hepatitis A virus (picornavirus). The HAV. almost always causes mild hepatitis. View produced from a transmission electron microscopy image. Viral diameter approximately: 30 nm.

Under a high magnification, this colorized negatively-stained transmission electron micrograph (TEM) captured some of the ultrastructural details exhibited by the new influenza A (H7N9) virus. On April 1, 2013, the World Health Organization (WHO) first reported 3 human infections with a new influenza A (H7N9) virus in China. Since then, additional cases have been reported. Most reported cases have severe respiratory illness and, in some cases, have died. At this time, no cases of H7N9 outside of China have been reported. This new H7N9 virus is an avian (bird) influenza (flu) virus. Human infections with avian influenza (AI, or bird flu) are rare but have occurred in the past, most commonly after exposure to infected poultry. However, this is the first time that this bird flu subtype (H7N9) has been found in people. This virus is very different from other H7N9 viruses previously found in birds.

Hepatitis A virus (picornavirus). HAV causes a hepatitis that is almost always benign. Image made from transmission electron microscopy. Approximate viral diameter: 30 nm.

Influenza B virus particles, colorized blue, isolated from a patient sample and then propagated in cell culture. Both influenza A and B can cause seasonal flu however, unlike influenza A virus, which can also infect animals, influenza B only infects humans.

Transmission Electron Micrograph (TEM) of the mumps virus.

Tacaribe virus (New World Arenavirus). Electron micrograph of Arenaviridae. Arenaviridae are RNA viruses whose particles are spherical and have an average diameter of 110-130 nanometers. Arenaviridae members are zoonotic, which means that in nature they are found in reservoir animal hosts. See image n0637205 on the site.

Smallpox. Transmission electron micrograph (TEM) of variola viruses, magnification 310,000x. This DNA virus is a Poxvirus (genus orthopoxvirus) that causes smallpox.

Colorized transmission electron micrograph of rabies virus particles (blue). Posted to commemorate World Neglected Tropical Diseases Day on January 30th. Rabies is one of the most neglected tropical diseases in underserved regions of the world. Per the World Health Organization, it causes an estimated 59,000 human deaths annually. It disproportionally affects rural poor populations and children with limited access to healthcare and veterinary services.

Coronavirus (CoV). viruses of the Coronaviridae family and the Orthocoronavirinae subfamily. It is a pathogen of respiratory syndromes. Viewed from a transmission electron microscopy (TEM) image. Viral diameter 80nm to 100nm.

Scanning electron microscopic image of Smallpox virus highly contagious infectious disease

Colorized transmission electron micrograph of influenza A/H3N2 virus particles (teal), isolated from a patient sample and then propagated in cell culture. Influenza A can infect both humans and animals, including birds and pigs.

Transmission Electron Micrograph (TEM) of the swine flu virus. The Swine flu virus is a strain H1N1 of influenza type A virus (orthomyxovirus) causing respiratory diseases to swines. Further to mutations and recombinaison with other influenza type A viruses (like avaian or human influenza), new strains transmissible from animals to humans and pathogenic to them can be created.

Under a high magnification, this colorized negatively-stained transmission electron micrograph (TEM) captured some of the ultrastructural details exhibited by the new influenza A (H7N9) virus. On April 1, 2013, the World Health Organization (WHO) first reported 3 human infections with a new influenza A (H7N9) virus in China. Since then, additional cases have been reported. Most reported cases have severe respiratory illness and, in some cases, have died. At this time, no cases of H7N9 outside of China have been reported. This new H7N9 virus is an avian (bird) influenza (flu) virus. Human infections with avian influenza (AI, or bird flu) are rare but have occurred in the past, most commonly after exposure to infected poultry. However, this is the first time that this bird flu subtype (H7N9) has been found in people. This virus is very different from other H7N9 viruses previously found in birds.

This digitally-colorized negative-stained transmission electron micograph (TEM) depicted a number of influenza A virions.

Colorized transmission electron micrograph of mpox virus particles (red/yellow) found within an infected cell (blue).

Colorized transmission electron micrograph of mpox virus particles (red/yellow) found within an infected cell (blue).

Influenza virus (from the Orthomyxoviridae family and the Influenzavirus genus). Image made from a transmission electron microscopy view.

Colorized transmission electron micrograph of influenza A virus particles, colorized green and blue, isolated from a patient sample and then propagated in cell culture. Influenza A can infect both humans and animals, including birds and pigs. More specifically, this image features the H3N2 influenza strain, isolated from a patient in Victoria, Australia, in 1975. Notable for forming both spherical particles/virions (pictured) and filamentous virions, this historical strain can be employed to study the breadth of the immune response elicited by universal flu vaccine candidates.

This digitally-colorized negative-stained transmission electron micograph (TEM) depicted a number of influenza A virions.

This colorized negative stained transmission electron micrograph (TEM) depicted some of the ultrastructural morphology of the A/CA/4/09 swine flu virus. Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses cause high levels of illness and low death rates in pigs. Swine influenza viruses may circulate among swine throughout the year, but most outbreaks occur during the late fall and winter months similar to outbreaks in humans. The classical swine flu virus (an influenza type A H1N1 virus) was first isolated from a pig in 1930.

Pneumococcus (streptococcus pneumoniae). Pneumococcus is the bacterium that causes pneumonia, bronchial pneumonia, purulent pleurisy, bacterial meningitis, ear infections, sinusitis and conjunctivitis. Optical microscopy x 2000.

Coloured transmission electron micrograph (TEM) of a MERS coronavirus particle , this virus (originally novel coronavirus 2012) has been named Middle East respiratory syndrome (MERS) coronavirus.

Fluvirus - Influenza virus or Influenza virus. The influenza virus causes the seasonal flu, with in humans, a set of symptoms associating: fever, headache, cough, pharyngitis, myalgia, asthenia and anorexia. View produced from a transmission electron microscopy view. Viral diameter approximately: 80 to 120 nm.

Hantavirus responsible for hantavirus pulmonary syndrome (HPS). This electron micrograph depicts the hantavirus virions responsible for causing hantavirus pulmonary syndrome, or HPS. There is no specific hantavirus treatment, cure, or vaccine, but with early treatment in an intensive care unit, where patients are intubated and given oxygen to help them through the period of severe respiratory distress, they may do better.

Coxsackie virus. Colored Transmission electron micrograph (TEM) of a group of Coxsackie B4 viruses. Coxsackieviruses are Enteroviruses, of the Picornaviridae group. They cause many diseases.

This colorized negative stained transmission electron micrograph (TEM) shows recreated 1918 influenza virions that were collected from supernatants of 1918-infected Madin-Darby Canine Kidney (MDCK) cells cultures 18 hours after infection. To separate these virions, the MDCK cells are spun down (centrifugation), and the 1918 virus in the fluid is immediately fixed for negative staining. The solid mass in lower center contains MDCK cell debris that did not spin down during the procedure.

Poliovirus. Image produced using high-dynamic-range imaging (HDRI) from an image taken with transmission electron microscopy. Viral diameter ranges from around 27 to 30 nm.

Rotavirus. Rotavirus is the primary cause of severe diarrhoea in young children worldwide. Image produced using high-dynamic-range imaging (HDRI) from an image taken with transmission electron microscopy. Viral diameter ranges from around 60 to 80 nm.

Hepatitis A virus (picornavirus). The HAV. almost always causes mild hepatitis. View produced from a transmission electron microscopy image. Viral diameter approximately: 30 nm.

This digitally-colorized transmission electron micrograph (TEM) revealed the presence of a number of infectious bronchitis virus (IBV) virions, which are Coronaviridae family members, and members of the genus Coronavirus. IBV is a highly contagious pathogen, which infects poultry of all ages, affecting a number of organ systems including the respiratory and urogenital organs. IBV is categorized as a Group 3 coronavirus member, with a helical genome composed of positive-sense single-stranded RNA ((+) ssRNA). This is an enveloped virus, which means that its outermost covering is derived from the host cell membrane. The coronavirus derives its name from the fact that under electron microscopic examination, each virion is surrounded by a corona or halo. This is due to the presence of viral spike peplomers emanating from its proteinaceous capsid.

This transmission electron microscope image shows SARS-CoV-2, the virus that causes COVID-19, isolated from a patient in the U.S. Virus particles are shown emerging from the surface of cells cultured in the lab. The spikes on the outer edge of the virus particles give coronaviruses their name, crown-like. Image captured and colorized at NIAID's Rocky Mountain Laboratories (RML) in Hamilton, Montana.

Spanish flu virus. Transmission Electron Micrograph (TEM) of Spanish flu virus. This pandemic virus infected a fifth of the world population and killed between 20 and 50 million. This Influenza virus type a, strain H1N1 is very close to the swine flu (strain H1N1) and the avian flu virus (strain H5N1).

1918 influenza virions (virus particles).

Transmission electron micrograph of a SARS-CoV-2 virus particle (UK B.1.1.7 variant), isolated from a patient sample and cultivated in cell culture. The prominent projections (green) seen on the outside of the virus particle (yellow) are spike proteins. This fringe of proteins enables the virus to attach to and infect host cells and then replicate. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland...

Poxviridae seen by transmission electron microscopy (TEM). Viral diameter 200-300nm.

This colorized negatively-stained transmission electron micrograph (TEM) captured some of the ultrastructural details exhibited by the new influenza A (H7N9) virus. On April 1, 2013, the World Health Organization (WHO) first reported 3 human infections with a new influenza A (H7N9) virus in China. Since then, additional cases have been reported. Most reported cases have severe respiratory illness and, in some cases, have died. At this time, no cases of H7N9 outside of China have been reported. This new H7N9 virus is an avian (bird) influenza (flu) virus. Human infections with avian influenza (AI, or bird flu) are rare but have occurred in the past, most commonly after exposure to infected poultry. However, this is the first time that this bird flu subtype (H7N9) has been found in people. This virus is very different from other H7N9 viruses previously found in birds.

Hepatitis A virus (HAV). Image produced from an image taken with transmission electron microscopy.

Hepatitis B virus (Hepadnavirid family). HBV causes sexually transmitted or blood-borne hepatitis, cirrhosis occurs in 20% of cases, 15 to 20 years after the onset of infection. View produced from a transmission electron microscopy image. Viral diameter approximately: 22 nm.

Transmission electron micrograph of HIV-1 virus particles (gold) replicating from the plasma membrane of an infected H9 T cell (pink).

Influenza type A virus causes flu in humans, swine, birds, horses and dogs. Which species the virus will infect is determined by the glycoprotein spikes on its outer envelope. They are many strains of influenza A virus, among which the avian flu virus (H5N1), swine flu (H1N1) or human. Transmission Electron Micrograph (TEM).

This negative stained transmission electron micrograph showed recreated 1918 influenza virions that were collected from the supernatant of a 1918-infected Madin-Darby Canine Kidney (MDCK) cell culture 18 hours after infection

This transmission electron microscope image shows SARS-CoV-2, the virus that causes COVID-19, isolated from a patient in the U.S. Virus particles are shown emerging from the surface of cells cultured in the lab. The spikes on the outer edge of the virus particles give coronaviruses their name, crown-like. Image captured and colorized at NIAID's Rocky Mountain Laboratories (RML) in Hamilton, Montana. Credit: NIAID

1918 Influenza Virions

Colorized transmission electron micrograph of monkeypox virus particles (red) cultivated and purified from cell culture

This negatively-stained transmission electron micrograph (TEM) revealed ultrastructural morphology of the Middle East Respiratory Syndrome Coronavirus (MERS-CoV), which was formerly known as novel coronavirus. (MERS-CoV) was identified in 2012 as the cause of respiratory illness in people. Investigations are being done to figure out the source of MERS-CoV and how it spreads. So far, there are no reports of anyone in the US getting infected with MERS-CoV. Most people who got infected with MERS-CoV developed severe acute respiratory illness with symptoms of fever, cough, and shortness of breath. About half of them died. Some people were reported as having a mild respiratory illness. MERS-CoV has been shown to spread between people who are in close contact. Transmission from infected patients to healthcare personnel has also been observed. Clusters of cases in Saudi Arabia, Jordan, the UK, France, Tunisia, and Italy are being investigated.

Hepatitis B virus (HBV). Image produced using high-dynamic-range imaging (HDRI) from an image taken with transmission electron microscopy. Viral diameter ranges from around 50 to 60 nm.

Colorized transmission electron micrograph of a mature extracellular Nipah Virus particle (green) near the periphery of an infected VERO cell (blue). Image captured and color-enhanced at the NIAID Integrated Research Facility in Fort Detrick, Maryland. Credit: NIAID.

Swine flu virus. Colorized negative stained transmission electron micrograph. Photo by C. S. Goldsmith and A. Balish, 2009.

Transmission electron micrograph of numbers of intraperitoneal Gram-negative Orientia tsutsugamushi rickettsial microorganisms which were inside the peritoneal cavity of an infected mouse

Colorized transmission electron micrograph of Middle East respiratory syndrome coronavirus particles.

Human Papillomavirus. Colored transmission electron micrograph (TEM) of human papillomavirus (HPV). The HPV is involved in the development of cervical cancers.

The human coronavirus causes respiratory infections (colds), and gastroenteritis. Image made from a transmission electron microscopy view. Approximate viral diameter: 80 to 160 nm.

This digitally-colorized transmission electron micrograph (TEM) revealed the presence of a number of infectious bronchitis virus (IBV) virions, which are Coronaviridae family members, and members of the genus Coronavirus. IBV is a highly contagious pathogen, which infects poultry of all ages, affecting a number of organ systems including the respiratory and urogenital organs. IBV is categorized as a Group 3 coronavirus member, with a helical genome composed of positive-sense single-stranded RNA ((+) ssRNA). This is an enveloped virus, which means that its outermost covering is derived from the host cell membrane. The coronavirus derives its name from the fact that under electron microscopic examination, each virion is surrounded by a corona or halo. This is due to the presence of viral spike peplomers emanating from its proteinaceous capsid.

Coloured TEM of a cluster of rotaviruses

Herpes virus (HSV). HSVs are the cause of cold sores and genital herpes. View taken with HDRI image processing from a transmission electron microscopy image. Viral diameter about 200 nm.

Adenovirus (highly contagious virus causing lymphadenopathy symptomatizing swelling of the glands in the neck, accompanied by a cold, or pharyngitis, or bronchitis, sometimes also conjunctivitis, keratitis, or a combination of the two (keratoconjunctivitis). View produced from a transmission electron microscopy view Viral diameter approximately: 80 to 110 nm.

This colorized transmission electron micrograph shows H1N1 influenza virus particles.

Influenza viruses, TEM

Transmission electron micrograph of SARS-CoV-2 virus particles, isolated from a patient. Image captured and color-enhanced at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland. Credit: NIAID.

Meningococcus or Neisseria meningitidis, is a bacterium that can cause meningitis. The bacteria are germs that can be found in the rhinopharynx, where it can cause benign rhinopharyngitis or an asymptomatic state. Only one in 400 carriers become victim to a serious meningococcal disease, mostly commonly acute purulent meningitis. Seen through an optical microscope x 1850.

Transmission electron micrograph of a SARS-CoV-2 virus particle (UK B.1.1.7 variant), isolated from a patient sample and cultivated in cell culture. The prominent projections (red) seen on the outside of the virus particle (blue) are spike proteins. This fringe of proteins enables the virus to attach to and infect host cells and then replicate. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland.

Negatively-stained transmission electron micrograph of Venezuelan equine encephalitis virus

Pneumococcal bacteria (streptococcus pneumoniae). Pneumococcus is an important pathogen in humans. It is responsible for many infections (pneumonia). He was responsible for pneumonia during the Spanish flu pandemic). Visualized by optical microscopy.

Bacteria, conceptual illustration.

Parainfluenza virus. Transmission electron micrograph (TEM) of parainfluenza virus. This RNA virus of the paramyxovirus class causes minor respiratory infections.

structure, pattern and crystals of newly formed ice structure, pattern and crystals of newly formed ice called the nylas black ice, skin Copyright: xZoonar.com/MaximilianxBuzunx 13577521

A Marburg virus virion, which had been grown in an environment of tissue culture cells. Marburg hemorrhagic fever is a rare, severe type of hemorrhagic fever which affects both humans and non-human primates. Caused by a genetically unique zoonotic (that is, animal-borne) RNA virus of the filovirus family, its recognition led to the creation of this virus family. The four species of Ebola virus are the only other known members of the filovirus family. After an incubation period of 5-10 days, the

Colorized transmission electron micrograph of mature extracellular Nipah Virus particles (red) near the periphery of an infected VERO cell (green). Image captured and color-enhanced at the NIAID Integrated Research Facility in Fort Detrick, Maryland. Credit: NIAID.

Legionella pneumophila. Transmission electron micrograph (TEM) of Legionella pneumophila, the bacteria known to cause Legionnaires' disease. Legionnaires' disease, also known as Legionellosis, is associated with poorly maintained air conditioning cooling towers and potable water systems. Often associated with nosocomial infections. Magnified approximately 119,500x.

An electron micrograph showing three Epstein-Barr virus (EBV) particles colorized red-orange. 2024 : scientists Find Weak Points on Epstein-Barr Virus.

This colorized negative-stained transmission electron micrograph (TEM) depicts the ultrastructural details of an influenza virus particle, or virion. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organism. The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent this illness is by getting a flu vaccination each fall.

Adenovirus. Image produced using high-dynamic-range imaging (HDRI) from an image taken with transmission electron microscopy. Viral diameter ranges from around 80 to 110 nm.

Under 500X magnification, this 1973 photomicrograph depicted a specimen of mouse brain tissue, stained using the hematoxylin-eosin (HE) staining technique, revealing the presence of Acanthamoeba polyphaga protozoa. CDC/Dr. George R. Healy 1973

Transmission electron micrograph of the Sin Number hanta virus. Hantaviruses that cause Hantavirus pulmonary syndrome (HPS) are carried in rodent droppings, especially the deer mouse. Incubation lasts for 1-5wks. Sickness begins with fever and muscle aches, followed by shortness of breath and coughing.

of 2