Microorganisms in Untreated Water

Colorized scanning electron micrographs of microorganisms showing bacteria, protozoa, and biofilms in untreated water specimens.

Blood clot, SEM

Colorized scanning electron micrograph of chronically infected and partially lysed cells (brown) infected with a variant strain of SARS-CoV-2 virus particles (purple), isolated from a patient sample. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland.

Methicillin-Resistant Staphylococcus Aureus. Scanning electron micrograph (SEM) of methicillin-resistant Staphylococcus aureus bacteria (MRSA); Magnification 9560x. This strain of Gram-positif bacterium has developed wide-ranging antibiotic resistance such as methicillin, and are hospital pathogens.

This scanning electron micrograph (SEM) depicted numerous clumps of methicillin-resistant Staphylococcus aureus bacteria, commonly referred to by the acronym, MRSA, Magnified 9560x. Recently recognized outbreaks, or clusters of MRSA in community settings have been associated with strains that have some unique microbiologic and genetic properties, compared with the traditional hospital-based MRSA strains, which suggests some biologic properties, eg virulence factors like toxins, may allow the community strains to spread more easily, or cause more skin disease.

Staphylococcus aureus is the bacterium responsible for food poisoning, localised skin diseases, respiratory diseases and in some extreme cases, septicemia. Image taken with an optical microscope X 1000.

Electron micrograph of Legionella bacteria, 6500x

Scanning Electron Micrograph (SEM) of methicillin-resistant Staphylococcus aureus bacteria, commonly known as MRSA

MRSA bacteria. Computer artwork of methicillin-resistant Staphylococcus aureus (MRSA) bacteria.

Intricate microstructures weaving a complex web

Microscopic Detail of Dandelion

Euastrum oblongum

Superconducting Ceramic Compound

Cilia of the Respiratory Tract

Tick on human skin, illustration

Colorized scanning electron micrograph of Marburg virus particles (yellow) both budding and attached to the surface of an infected VERO E6 cell (blue).

Used surgical swab, SEM

Surface of the colon mucosa. SEM x 200.

Abstract computer artwork

This colorized transmission electron micrograph (TEM) revealed the presence of a number of Novel H1N1 virus virions in this tissue culture sample. Novel H1N1 (referred to as swine flu early on) is a new influenza virus causing illness in people. This new virus was first detected in people in the United States in April 2009. This virus is spreading from person-to-person worldwide, probably in much the same way that regular seasonal influenza viruses spread. On June 11, 2009, the World Health Organization (WHO) reported that a pandemic of novel H1N1 flu was underway.

Under a moderately-high magnification of 2500X, this digitally-colorized scanning electron micrograph (SEM) of an untreated water specimen extracted from a wild stream mainly used to control flooding during inclement weather, revealed the presence of unidentified organisms, which included bacteria, protozoa, and algae. In this particular view, a microorganism is featured, the exterior of which is covered by numerous projections imparting an appearance of a sea urchin. This microscopic pin cushi

Fat tissue. Coloured scanning electron micrograph (SEM) of a sample of fat tissue, showing fat cells (adipocytes, blue/purple) surrounded by fine stra...

Colorized scanning electron micrograph of monkeypox virus (green) on the surface of infected VERO E6 cells (red)

Enterococcus. Scanning electron micrograph (SEM) of Enterococcus faecalis (formerly known as Streptococcus faecalis). This Gram-positive bacterium is commonly found in human intestine. It can also cause urinary tract and skin infections. E. faecalis is resistant to a number of antibiotics and is often involved in nosocomial diseases.

Colorized scanning electron micrograph of Marburg virus particles (yellow) both budding and attached to the surface of an infected VERO E6 cell (blue).

Colorized scanning electron micrograph of Marburg virus particles (yellow) both budding and attached to the surface of an infected VERO E6 cell (blue).

Birch Tree Pollen

Human coronavirus. Computer artwork of a Human coronavirus particle. Coronaviruses primarily infect the upper respiratory and gastrointestinal tract a...

Protein molecules, computer artwork.

Coloured scanning electron micrograph (SEM) of Coral sand (Kailua, Hawaii). Beach sand contains both rock minerals and skeletons that have been derive...

Human hair with dandruff, illustration

Microsporum canis fungus, illustration

Yeast cells, SEM

Dense connective tissue, coloured scanning electron micrograph SEM. The main component of this tissue is collagen. Magnification: x1500 when printed a...

Kidney glomerulus, SEM

Listeria denitrificans seen at SEM x 10,000. See image n 0218605 on the site.

Novel Coronavirus SARS-CoV-2, causes 'coronavirus disease-2019', abbreviated as COVID-19. Scanning electron microscope image shows SARS-CoV-2 (yellow) emerging from the surface of cells (pink) isolated from a US patient. Colors are artificially assigned to the monotone image for clarity. Image by National Institute of Allergy and Infectious Disease (NIAID) (BSLOC_2020_2_244)

SEM of two Acanthamoeba polyphaga protozoa interacting

This scanning electron microscope image shows SARS-Cov-2 also known as 2019-nCoV, the virus that causes COVID-19 isolated from a patient in the United States, emerging from the surface of cells cultured in laboratory.

Sperm cell, SEM

$Scanning electron micrograph of a murine macrophage infected with Francisella tularensis strain LVS. Macrophages were dry-fractured by touching the cell surface with cellophane tape after critical point drying to reveal intracellular bacteria. Bacteria (colorized in pink) are located either in the cytosol or within a membrane-bound vacuole.$

This scanning electron microscope (SEM) image revealed a protozoan Acanthamoeba polyphaga, as it was about to complete the process of cell division, known as mitosis, becoming two separate organisms. Note the numerous pseudopodia, projecting from the surfaces of these organisms. These pseudopodia allow amoebas to move and grasp objects in their environment. CDC/Catherine Armbruster Margaret Williams 2009

Meningococcus seen under a scanning electron microscope.

Heart capillary, SEM

A scanning electron microscope photograph of iron crystals which grow in a small vug or cavity in a recrystallized breccia (fragmented rock) from the Apollo 15 Hadley-Apennino lunar landing site. The largest crystal is three microns across. Perfectly developed crystals such as these indicate slow formation from a hot vapor as the rock was cooling. The crystals are resting on an interlocking lattice of pyroxene (calsium-magnesium-iron silicate).

Colorized scanning electron micrograph of Ebola virus particles (green) in extracellular space between infected African green monkey kidney cells. Image captured and color-enhanced at the NIAID Integrated Research Facility in Ft. Detrick, Maryland.

Scanning Electron Micrograph (SEM) of methicillin-resistant Staphylococcus aureus bacteria, commonly known as MRSA

Enterococcus. Scanning electron micrograph (SEM) of Enterococcus faecalis (formerly known as Streptococcus faecalis). This Gram-positive bacterium is commonly found in human intestine. It can also cause urinary tract and skin infections. E. faecalis is resistant to a number of antibiotics and is often involved in nosocomial diseases.

Under a very high magnification of 25000X, this colorized scanning electron micrograph (SEM) revealed the presence of a single Gram-negative Salmonella typhimurium bacterium, which was imaged right at the point where it was undergoing the process of cell division, resulting in the formation of two separate organisms. This dividing bacterium had been isolated from a pure culture.

A closeup view of a purple spherical object with craterlike textures on its surface.

$Fractured tendon. Coloured scanning electron micrograph (SEM) of a fractured flexor tendon of the finger showing the collagen fibres. The parallel arr...$

Ebola virions (virus particles). Ebola hemorrhagic fever is a severe, often-fatal disease in humans, monkeys, gorillas, and chimpanzees that has appeared sporadically since its initial recognition in 1976.

Moth proboscis, SEM

This scanning electron micrograph depicts a grouping of Gram-negative Flexispira rappini bacteria, magnified 13,951x. Its name F. rappini is considered provisional, for it was never formally proposed or accepted. Subsequently determined to be closely related to Helicobacter spp. it is referred to as Helicobacter sp. flexispira in the literature.

Dental plaque, SEM

Activated platelets with channels of the open canalicular system (OCS), coloured scanning electron micrograph (SEM). Platelets are blood cell fragment...

Coloured scanning electron micrograph (SEM) of fungal cells. The round structures are sporangia, which house the fungus' reproductive cells (spores). ...

Skin cancer cell, coloured scanning electron micrograph (SEM). Cultured melanoma cell showing the numerous blebs and microvilli characteristic of canc...

This scanning electron micrograph (SEM) revealed the ventral surface of a Giardia muris trophozoite that had settled atop the mucosal surface of a rat's intestine. Note the microvilli, which can be seen in the background, as tiny rounded structures that are approximately 0.15 microns in diameter. These microvilli cover the surface of each intestinal epithelial cell. The Giardia's ventral adhesive disk resembles a suction cup, where overlapping microtubules in the cytoplasm form a number-6-shaped figure. The edge of the suction cup, called the ventrolateral flange, partially encircles the adhesive disk and is absent posteriorly where a ventral pair of flagella emerges from above, dorsal to the disk. Giardia muris has four pairs of flagella that are responsible for the organism's motility. The adhesive disk facilitates adhesion to the intestinal surface. The protozoan Giardia causes the diarrheal disease called giardiasis.

Lung trachea epithelium. Scanning electron micrograph (SEM) of the lung trachea epithelium which consists of ciliated cells and non-ciliated cells.

Antibody blocking programmed cell death, illustration

Scanning Electron Micrograph (SEM): human sperm. Date:

Scanning Electron Micrograph (SEM): Human skin section across vein showing red blood cells. Date:

Microsporum canis is a species of fungus of the genus Microsporum responsible for the majority of cases of ringworm in dogs and cats, and in humans. X 1000 optical microscopy.

Coxiella burnetii, the bacteria that cause Q fever. Credit: NIAID.

Osteoporosis. Computer artwork of the trabeculae in the cancellous (spongy) bone tissue affected by osteoporosis. The cancellous tissue fills the inte...

Under a moderately-high magnification of 8000X, this scanning electron micrograph (SEM) depicted a grouping of Gram-negative Legionella pneumophila bacteria

Meningococcus seen under a scanning electron microscope.

Colorized scanning electron micrograph of a cell (blue) infected with SARS-CoV-2 virus particles (pink), isolated from a patient sample. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland.

Colorized scanning electron micrograph of Marburg virus particles (blue) both budding and attached to the surface of infected VERO E6 cells (orange). Image captured and color-enhanced at the NIAID Integrated Research Facility in Fort Detrick, Maryland. Credit: NIAID.

Bacteria cultured on Petri dish

SEM image of the Death of a Cancer Cell (step 2 of a 6 step sequence)

Scanning Electron Micrograph (SEM) of Streptococcus pneumoniae bacteria. This Gram-negative bacterium is a leading cause of pneumonia. It also causes many other pathologies like middle ear infections (otitis media), bacteremia and meningitis.

CAR-T cell therapy, illustration

Deformed sperm cell, SEM

Colorized scanning electron micrograph of a cell (blue) infected with a variant strain of SARS-CoV-2 virus particles (yellow), isolated from a patient sample. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland.

Coloured scanning electron micrograph (SEM) of White bread surface. Shown here is a slice of white sandwich bread, revealing the large airspaces that ...

Bulb tentacle sea anemone (Entacmaea quadricolor) close up detail, Maldives, Indian Ocean

THC binding to cannabinoid receptors, illustration

Coloured scanning electron micrograph (SEM) of Komagataella phaffii - methylotrophic yeast. Komagataella phaffii is a newly identified yeast that has ...

Scanning Electron Micrograph of Untreated Water Sample

Blood clot, SEM

Scanning photomicrograph of clustered Gram-negative Salmonella typhimurium bacteria at a high magnification of 12000X

A culture of Salmonella bacteria on a plane surface. Salmonella is a genus of rod-shaped, Gram-negative bacteria.

Lymphoma cancer cell. Coloured scanning electron micrograph (SEM) of a lymphoma cell. A lymphoma is a cell of the immune system that has become cancer...

Lymphoma cancer cell. Coloured scanning electron micrograph (SEM) of a lymphoma cell. A lymphoma is a cell of the immune system that has become cancer...

Sunflower Pollen

Fluoresce hard coral, Coral fluorescenc

Vibrio parahaemolyticus. Scanning electron micrograph (SEM) of Vibrio parahaemolyticus. bacteria. This Gram-negative bacterium causes gastointestinal infection to man. It is closely related to Vibrio cholerae, the agent of cholera. Magnified 19058x.

Birch Tree Pollen

Mite (Blattisocius tarsalis) SEM close-up view of individual predating on eggs of Indian Meal Moth (Plodia interpunctella), this species is used to control population sizes of the moth, seen at 70x magnification

Intricate crystal formations in monochrome

Marine sponge in reef, Porifera, Kimbe Bay, New Britain, Papua New Guinea, Oceania

Fishing nets

Prorocentrum dinoflagellates, SEM

Epithelial and fibroblast cell coculture Long-term growth human mammary epithelial cells (HMEC) admixed in coculture with fibroblast from the same initial breast tissue grown as 3-dimenstional constructions in the presence of attachment beads in the NASA Bioreactor. A A typical constrct about 2.0 mm in diameter without beads on the surface. The center of these constrcts is hollow, and beads are organized about the irner surface. Although the coculture provides smaller constructs than the monoculture, the metabolic of the organized cells is about the same. B, C, D Closer views of cells showing that the shape of cells and cell-to-cell interactions apprear different in the coculture than in the monoculture constructs. NASA's Marshall Space Flight Center (MSFC) is sponsoring research with Bioreactors, rotating wall vessels designed to grow tissue samples in space, to understand how breast cancer works. This ground-based work studies the growth and assembly of human mammary epithelial cell

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