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A confocal micrograph of an intestinal biopsy from a child infected with shiga toxin-producing E. coli.

Shiga toxin is an extremely potent toxin that is produced when the bacterium contains a bacteriophage carrying the toxin gene. It is closely linked with Haemolytic Uraemic Syndrome and acute renal failure in children. After ingestion via contaminated food or water the E. coli bacteria colonize t... Read More

Spirochete Treponema pallidum

This photomicrograph depicts a Treponema pallidum bacterium, a spirochete 5 - 15 micrometers in length, which is the causative agent of syphilis.
Syphilis, is passed from person to person through direct contact with a syphilis sore. Sores occur mainly on the external genitals, vagina, anus, or ... Read More

Streptococcus

Image of Streptococcus, a type (genus) of spherical bacteria that can colonize the throat and back of the mouth. Stroptococci often occur in pairs or in chains, as shown here.

Tina Carvalho, University of Hawaii at Manoa Read More

Borrelia burgdorferi

Borrelia burgdorferi is a spirochete, a class of long, slender bacteria that typically take on a coiled shape. Infection with this bacterium causes Lyme disease.

Credit: Tina Carvalho, University of Hawaii at Manoa, NIGMS photo gallery
Read More

Clostridium difficile

A colour-enhanced scanning electron micrograph image showing a cluster of Clostridium difficile on a surface. Clostridium difficile is a species of Gram-positive bacteria that causes severe diarrhea and other intestinal disease when competing bacteria in the gut flora have been wiped out by anti... Read More

ARTS triggers apoptosis

Cell showing overproduction of the ARTS protein (red). ARTS triggers apoptosis, as shown by the activation of caspase-3 (green) a key tool in the cell's destruction. The nucleus is shown in blue.

Sarit Larisch and Hermann Steller, Rockefeller University Read More

Snottites - slimy, dripping stalactites made of goo, that contain bacteria in abundance and beautiful microscopic gypsum crystal formations.

Snottites have captivated cave-goers and scientists alike since the earliest publication on cave microbes by Hoeg in 1946. These biofilms cover the walls with a thick snot-like film, from which they derive their particularly appropriate name. A variety of cave systems, the Frasassi caves in Ital... Read More

Beaded bacteriophage

This sculpture made of purple and clear glass beads depicts bacteriophage Phi174, a virus that infects bacteria. It rests on a surface that portrays an adaptive landscape, a conceptual visualization. The ridges represent the gene combinations associated with the greatest fitness levels of the vi... Read More

I can haz ASM talks

An I Can Haz Cheezburger meme for ASM's General Meeting in San Francisco created by artist Michele Banks. Read More

Dicty fruit

Dictyostelium discoideum is a soil-living amoeba. A group of 100,000 form a mound as big as a grain of sand.

The hereditary information is carried on six chromosomes with sizes ranging from 4 to 7 Mb resulting in a total of about 34 Mb of DNA, a multicopy 90 kb extrachromosomal element that h... Read More

Exploring HIV - Illustration by David S. Goodsell

If we can visualize a protein's shape, we can learn much more about how it functions and how we might block its activity. This was the guiding principle behind an NIH initiative launched 25 years ago to spur the discovery of HIV-related protein structures. Structures produced through the program... Read More

Prosthogonimus macrorchis

Prosthogonimus macrorchis, a flatworm poultry parasite.

A digenetic trematode (family Prosthogonimidae) located in the oviduct and bursa fabricii of poultry in North America, particularly common in states bordering the Great Lakes. (http://www.medilexicon.com) Credit: Mr. Spike Walker

2010... Read More

Arabidopsis leaf injected with a pathogen

This is a magnified view of an Arabidopsis thaliana leaf eight days after being infected with the pathogen Hyaloperonospora arabidopsidis, which is closely related to crop pathogens that cause 'downy mildew' diseases. It is also more distantly related to the agent that caused the Irish potato fa... Read More

Finding One Bug

A new, nanometer-sized biosensor can detect a single deadly bacterium in tainted ground beef. How? Researchers attached nanoparticles, each packed with thousands of dye molecules, to an antibody that recognizes the microbe E. coli O157:H7. When the nanoball-antibody combo comes into contact with... Read More

Serratia marcescens on a DNA plate

Serratia marcescens streaked on a DNA plate and incubated for 48 hours at room temperature. Read More

HIV and TB at the White House (photo)

Photo taken by Joshua Yospyn for WJLA TV at the We Can End AIDS march in Washington, D.C. Read More

Cellular Aging

A protein called tubulin (green) accumulates in the center of a nucleus (outlined in pink) from an aging cell. Normally, this protein is kept out of the nucleus with the help of gatekeepers known as nuclear pore complexes. But NIGMS-funded researchers found that wear and tear to long-lived compo... Read More

Vorticella

A single Vorticella species. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Nikon's Small World 2012 - Sonderia sp. (a ciliate that preys upon various algae, diatoms, and cyanobacteria) (400x)

Nikon's Small World 2012 Photomicrography Competition

Dr. Diana Lipscomb
George Washington University
Department of Biological Sciences
Washington, District of Columbia, USA

Subject Matter:
Sonderia sp. (a ciliate that preys upon various algae, diatoms, and cyanobacteria) (400x)

Tec... Read More

Parasitic Fungus Phragmidium tuberculatum on a rose leaf

Colorized scanning electron micrograph of rust on a rose leaf. Rose rust is a disease specific to roses and is caused by the parasitic fungus Phragmidium tuberculatum and some other closely related species. This disease occurs during spring and persists until the leaves fall. This images shows r... Read More
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