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STREPTOCOCCUS

A colorized electron microscope image captures delicate chains of streptococcus in a laboratory sample. Though some strep infections can be deadly, many strains are harmless—among the thousands of benign beings that make their home in our bodies.

Photograph by Martin Oeggerli, with support fr... Read More

Astrobiologists Discover Strange Benthic Microbial Mats in Antarctica

Photosynthetic microbial mats forming large conical structures up to half a meter tall have been discovered by astrobiologists in Lake Untersee, Antarctica. This research is described in an article in the May 2011 issue of the journal Geobiology.

Lake Untersee is located at 71°20'S, 13°45'E i... Read More

Lactose fermenter (escherichia coli) on Russell's double sugar agar

Lactose fermenter (escherichia coli) on Russell's double sugar agar Read More

Portrait: Richard Lenski

Richard Lenski, Hannah Distinguished Professor, Michigan State University, at the American Association for the Advancement of Science meeting in Vancouver, British Columbia. Read More

Stream Water Specimen

Under a relatively low magnification of 121X, 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... Read More

Erysipelothrix rhusiopathiae

Photograph of hematoma-like swelling off the caruncle of turkeys infected with Erysipelothrix rhusiopathiae. Please submit your microscopy and culture images to MicrobeWorld. Upload them with the 'Image' box checked. Read More

Herpes simplex, type 1

Herpes simplex, type 1. Isolate in human fetal diploid cell cultures, identified by direct FA staining (R.W. Emmons) Read More

Auxarthron (Myxotrichium) umbrinum

Auxarthron (Myxotrichium) umbrinum. Arthrospores closely resemble those of C. immitis. Isolated in Death Valley, California soil Read More

Hookworm poster

Photograph of a poster issued by the Chinese government in the late 1970s depicting the spread of hookworm to humans by the use of human feces as fertilizer. A prevention method is also illustrated - wearing shoes. These posters have been in the office of Dickson Despommier since the 1970s. Read More

escheria coli bacteriophage plaque count. four dilution plates (10x)

escheria coli bacteriophage plaque count. four dilution plates (10x) Read More

Cladosporium trichoides

Cladosporium trichoides hyphae in brain abscess. Case of Dr. Barnola. PAS stain. Human Read More

Bioluminescent art: Beautiful bacteria glow in the dark

Bioluminescent art blends science and creativity to create images that can only be seen in the dark. What do you get when you add a chemical engineer, a graphic designer and a research scientist? Beautiful art. In a wondrous combination of nature and design, bioluminescent art involves using nat... Read More

Which is the morphology of this micro-organism?

Please help me! I am planning to identify this microorganism by API but I can not identify the shape (rod or cocci). This microorganism has positive oxidase. Its colony is red, irregular, flat.
Please teach me. Thanks so much! Nhu Thuy from Vietnam
Read More

Art,Science Mixer At Mission Bay

As researchers, sneakers on, trickled out of UC San Francisco’s Genentech Hall on a warm, windless evening this week, assorted persons with stylish glasses and prettier footwear made their way against the flow and into the building’s marble atrium.

The California College of the Arts and the ... Read More

It came from your keyboard!

Its a lot more crowded in your cubicle than you probably thought eh? With these little guys, even when you're by yourself you're never alone! Read More

Tricky Trichy

Trichomonas vaginalis is a protozoan parasite of the urogenital tract in men and women and causes a sexually transmitted disease, trichomoniasis, in about half of infected women. Infections are associated with pelvic inflammatory disease, adverse pregnancy outcomes, infertility, an increased inc... Read More

Metallo-β-lactamase producing Pseudomonas aeruginosa


The production of Metallo-β-lactamase is one of the resistance mechanisms of Pseudomonas aeruginosa. Metallo-β- lactamases are members of Group B in the molecular classification of Ambler and are Clavulanic acid resistant enzymes which require divalent cations of zinc as co-factors for enzymat... Read More

E-coli on TSI

E-coli on TSI Read More

Starch Agar

Starch agar contains high molecular weight starch molecules (soluable starch). When Iodine is added it reacts with starch to produces a dark brown/purple color. A zone of clearing forms around organisms that produce the exoenzyme amylase after addition of iodine. This plate was incubated for ... Read More

Media. Green and blue water colour and Serratia marcescens (red)

This is a joint project with water color artist Sarah Roberts to study the interaction of bacteria with traditional water colors. Many different types of bacteria have been assessed but only two so far, can be said to paint. When the white pigmented bacterium Proteus mirabilis, and the red Serra... Read More

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