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Absidia corymbifera

Absidia corymbifera in a transplantable 'tumor' of the mouse Read More

Mycobacterium tuberculosis culture

This is a close-up of a Mycobacterium tuberculosis culture revealing this organism’s colonial morphology.

Note the colorless rough surface, which are typical morphologic characteristics seen in Mycobacterium tuberculosis colonial growth. Macroscopic examination of colonial growth patterns is ... Read More

Mycoplasma pneumoniae

Mycoplasma pneumoniae. Macrophotograph of 16mm petri dish containing micro-colonies (spherules) characteristics of broth-grown Mycoplasma pneumoniae Read More

An ounce of prevention . . .

As the old saying goes, can beat a pound of the Shigella bacteria, seen here penetrating the intestinal mucosa of some poor soul.
Killing approx. 1 million people annually - most of them children, Shigella is best prevented by two simple strategies: washing hands before handling food & thorou... Read More

Illustration of sites of embryonated egg inoculation

Illustration of sites of embryonated egg inoculation Read More

Quantitative precipitin test

Quantitative precipitin test. Constant antibody with 2-fold increase in antigen concentration. Note inhibition in antigen excess and precipitation in equivalence zone. Read More

The results of a pour plate after incubation

The results of a pour plate after incubation. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Several paramecia showing internal structures

Several paramecia showing internal structures. From the Wistreich Collection. Read More

Viruses thrive in big families, in sickness and in health

SALT LAKE CITY - The BIG LoVE (Utah Better Identification of Germs-Longitudinal Viral Epidemiology) study, led by scientists at the University of Utah School of Medicine, finds that each bundle of joy puts the entire household at increased risk for infection with viruses that cause colds, flu, a... Read More

Fungi at root of plant drugs that can help, or harm, sick monarch butterflies

Previously, biologists at Emory University and the University of Michigan discovered that butterflies use plant toxins as a drug to cure their offspring of parasitic infections. Now they've dug a little deeper and found that the fungi associated with the roots of milkweed plants change both the ... Read More

Activated Sludge

Activated sludge. Stalked ciliates grazing the sludge material (1000X) Read More

Unknown environmental Contaminant on blood agar plate streaked with S. pyogenes

A streak plate of Strep pyogenes on blood agar, stock culture used for class, was kept at room temp for 1 month. Before disposal a contaminant, presumably environmental, was seen on the plate. The pigment was opaque tan/yellow and with a mucoid surface. Lobate marigins with raised irregular-rh... Read More

Simple intervention can moderate anti-vaccination beliefs, study finds

CHAMPAIGN, Ill. -- It might not be possible to convince someone who believes that vaccines cause autism that they don't. Telling skeptics that their belief is not scientifically supported often backfires - strengthening, rather than weakening, their anti-vaccine views. But researchers say they h... Read More

Sonderia sp.

Sonderia sp. (a ciliate that preys upon various algae, diatoms, and cyanobacteria)

2012 Nikon Small World Photomirography Competition Dr. Diana Lipscomb, George Washington University, Department of Biological Sciences, Washington, District of Columbia, USA Read More

Negative stain smallpox virus

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. Read More

Anyone have any ideas for identity ?

please send input as to the nature of this. things I know: zoonotic, fast reproduction, fruiting bodies, possible yeast, cryptococcus? Dicty?some maturing cysts filled with red, one-two red dots. Read More

Corynebacterium - Tissue section

Corynebacterium - Tissue section. H & E stain. Diphtheritic tonsillitis Read More

Neisseria meningitidis in sputum. Gram stain (1000X)

Neisseria meningitidis in sputum. Gram stain (1000X) Read More

"The Unseen World"

Philadelphia artist Kate Kaman (www.katekaman.com) has designed a dynamic larger-than-life sculptural depiction of the most plentiful and ancient microscopic life forms -- bacteria. Suspended throughout an area measuring approximately 130 feet long, 27 feet wide and 41 feet tall, “The Unseen Wor... Read More

Diatoms

2009 Nikon Small World Competition award 10th place: Leave it to the diminutive diatoms to bring out algae's best side. Only 10 times larger than life, this image was captured via dark-field by Arlene Wechezak in Anacortes, Wash. Such diatoms have been proposed as a key biofuel source of the fut... Read More
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