Microorganisms in Untreated Water

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

Blood clot, SEM

This digitally colorized scanning electron microscopic (SEM) image 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 mass of gelatinous biofilm had enmeshed numbers of microorganisms, including amoebae and bacteria. CDC/ Janice Haney Carr 2009

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

Fallopian tube cells, SEM

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

Scanning electron micrograph of Neisseria gonorrhoeae bacteria, which causes gonorrhea.

Coloured scanning electron micrograph (SEM) of a neutrophil white blood cell (bottom) engulfing methicillin-resistant Staphylococcus aureus bacteria (MRSA, yellow).

Gallstone, SEM

Blood clot, SEM

Staphylococcus illustration

Human red blood cells, monocytes (white blood cells), activated platelets and fibrin thread, composite coloured scanning electron micrograph (SEM). Re...

Gall bladder surface, SEM

Escherichia coli bacteria yellow, coloured scanning electron micrograph SEM. A few cocci bacteria pink are also present. Magnification: x40,000 when p...

Transmission electron micrograph of cytomegalovirus (CMV) particles (pink) found within intracellular vesicles of an infected macrophage (purple).

Aspergillus Fumigatus

Daffodil (Narcissus sp) SEM close-up view of pollen on anther at 700x magnification

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

MRSA bacteria, SEM

Colorized transmission electron micrograph showing USA 300 strain of Staphlococcus aureus, shown in gold, outside a white blood cell, shown in blue.

Human red blood cells trapped in a fibrin blood clot, coloured scanning electron micrograph (SEM). Human red blood cells trapped in a fibrin blood clo...

Treponema pallidum, the bacterium responsible for syphilis.

Foot bacteria, SEM

Protein molecules, computer artwork.

Human red blood cells trapped in a fibrin blood clot, coloured scanning electron micrograph (SEM). Human red blood cells trapped in a fibrin blood clo...

Intricate microstructures resembling a lunar landscape in monochrome

Interaction of MRSA with a human white cell. The bacteria shown is strain MRSA252, a leading cause of hospital-associated infections in the United States and United Kingdom.

Colorized scanning electron micrograph of an apoptotic cell (green) heavily infected with SARS-COV-2 virus particles (purple), isolated from a patient sample. Image captured and color-enhanced at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland. Credit: NIAID.

Scanning electron micrograph of Yersinia pestis, which causes bubonic plague, on proventricular spines of a Xenopsylla cheopis flea.

Fallopian tube, SEM

Scanning electron micrograph of S. aureus bacteria escaping destruction by human white blood cells.

Scanning electron micrograph of human immunodeficiency virus (HIV), grown in cultured lymphocytes. Virions are seen as small spheres on the surface of the cells

Scanning electron micrograph of Lassa virus budding from a cell. Lassa virus (LASV) is an arenavirus that causes Lassa hemorrhagic fever, a type of viral hemorrhagic fever (VHF) in humans and other primates. Image purchased and colorized from the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland. Credit: NIAID

Mycobacterium chelonae bacteria, SEM

Yersinia pestis bacteria that had gathered on the proventricular spines of a Xenopsylla cheopis flea. The Y. pestis bacterium is the pathogen that causes bubonic plague, scanning electron micrograph (SEM).

Lung. Alveoli of the lungs SEM (Scanning Electron Microscope)

Uterine cancer, SEM

Coloured scanning electron micrograph (SEM) of a neutrophil white blood cell (bottom) engulfing methicillin-resistant Staphylococcus aureus bacteria (MRSA, yellow).

Scanning electron micrograph of Neisseria gonorrhoeae bacteria, which causes gonorrhea. Exploring a Meningitis Vaccine for Gonorrhea Prevention.

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

Hyaline cartilage, SEM

Colorized scanning electron micrograph of a VERO E6 cell (purple) showing elongated cell projections and signs of apoptosis, after infection with SARS-COV-2 virus particles (pink), which were isolated from a specimen the patient. Image requested from the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland.

Colorized scanning electron micrograph of Middle Eastern Respiratory Syndrome virus particles attached to the surface of an infected VERO E6 cell.

Plaque-forming bacteria, SEM

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

Scanning electron micrograph of a clump of Staphylococcus epidermidis bacteria in the extracellular matrix, which connects cells and tissue.

Protein molecules, computer artwork.

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

Colorized scanning electron micrograph of mpox virus particles (blue) on the surface of infected VERO E6 cells (pink).

Yeast cells. Coloured scanning electron micrograph (SEM) of cells of brewer's, or baker's, yeast (Saccharomyces cerevisiae). This fungus consists of s...

Coloured SEM of healthy skin

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

Coloured scanning electron micrograph (SEM) of House dust. Components such as fibre, hair, pollen, insect faecal matter and scale (animal dander) caus...

Common daisy anther, SEM

Cells background.

Nerve fibres, SEM

Microscopic view of Rubella. Rubella is an acute, contagious viral infection. While the illness is generally mild in children, it has serious consequences in pregnant women causing fetal death.

Scanning electron micrograph of a human neutrophil ingesting MRSA.

Leather Fern (Arachniodes adiantiformis) SEM close-up view of sori on the underside of frond where haploid spores are formed during meiosis at 21x magnification

Scanning electron micrograph of S. aureus bacteria escaping destruction by human white blood cells.

Protein molecules, computer artwork.

Colorized scanning electron micrograph of a cell (green) infected with UK B.1.1.7 variant SARS-CoV-2 virus particles (pink), isolated from a patient sample. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland.

SEM image of Gram-negative Legionella pneumophila bacteria

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

Coloured scanning electron micrograph (SEM) of a neutrophil white blood cell (bottom) engulfing methicillin-resistant Staphylococcus aureus bacteria (MRSA, yellow).

Colorized scanning electron micrograph of mpox virus (purple) on the surface of infected VERO E6 cells (tan).

Vibrio cholerae. Scanning electron micrograph (SEM) of Vibrio cholerae bacteria. This Gram-negative bacterium causes cholera. Magnified 22371x.

Strawberry pollen, SEM

Pancreas tissue, SEM

Coral fluorescence (Acropora sp.) at night, photographed under blue light, Raja Ampat, West Papua, Ceram Sea, Pacific Ocean.

Red cell. Color enhanced scanning electron micrograph (SEM) of human red blood cells. Magnification 11397x.

Colorized scanning electron micrograph of mpox virus particles (green) on the surface of infected VERO E6 cells (blue).

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

Daisy, x370 magnification

Colorized transmission electron micrograph of monkeypox virus particles (orange) found within an infected cell (green), cultured in the laboratory.

Coloured scanning electron micrograph (SEM) Emu eggshell surface with tiny pores (Dromaius novaehollandiae). Calcium carbonate crystals make up the Em...

Nematode worm eggs, illustration

Dividing yeast cells, SEM

Under a moderate magnification of 2,969X, this scanning electron micrograph (SEM) revealed a number of clusters of Gram-positive, beta-hemolytic Group C Streptococcus sp. bacteria. The genus Streptococcus is comprised of microaerophilic cocci (round), which are not motile and occur in chains or pairs. The genus is defined by a combination of antigenic, hemolytic, and physiological characteristics into Groups A, B, C, D, F, and G. Groups A and D can be transmitted to humans via food. Photo by Ja

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

Protein molecules, computer artwork.

Intestinal lining, SEM

Mediterranean Fan Palm (Chamaerops humilis) SEM close-up view of pollen at 270x magnification

Coloured scanning electron micrograph (SEM) of Streptococcus thermophilus, Gram-positive, coccoid prokaryote (bacterium). Streptococcus thermophilus (...

Tomato leaf surface, SEM

Blood vessel in the lung, SEM

Malassezia lipophilis

Scanning electron micrograph of methicillin-resistant Staphylococcus aureus (MRSA, green) surrounded by cellular debris. MRSA resists treatment with many antibiotics.

Leukaemia blood cells, SEM

Coloured scanning electron micrograph (SEM) Chicken eggshell surface (Gallus gallus domesticus). Shown here are the surface mineral crystals that form...

A colorized scanning electron microscope image of Group A Streptococcus (orange) during phagocytic interaction with a human neutrophil (teal).

This scanning electron micrograph shows human immunodeficiency virus (HIV-1), (spherical in appearance) co-cultivated with human lymphocytes.

This scanning electron microscope image shows SARS-CoV-2 (round gold particles) emerging from the surface of a cell cultured in the laboratory. SARS-CoV-2, also known as 2019-nCoV, is the virus that causes COVID-19. Image captured and colorized at Rocky Mountain Laboratories in Hamilton, Montana. Credit: NIAID

Fat tissue, SEM

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

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