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Two Fresh Sleeves of LB/Tet Plates

Here's what you can get out of about a liter of LB agar. They have a very low concentration of Tetracycline in them to allow for a more permissive growth pattern. All in a night's work! Read More

Something in the water: Vibrio cholerae

Tiny rod-shaped bacteria called Vibrio cholerae cause cholera infections.

Credit: Tina Carvalho, University of Hawaii at Manoa

Related article: "The Quake that Brought Back Cholera" (http://publications.nigms.nih.gov/insidelifescience/cholera.html)
Allison MacLachlan
Posted August 10, 2... Read More

Byssochlamys sp.

Byssochlamys sp. Asci. Nomarski (800x) Read More

fluorescent from Chicago River!

A group of students (Adrienne Linzemann, Jose Aveja, Elsa quintero), staff (William Thompson), and faculty (Farahnaz Movahedzadeh) from Harold Washington College participated in Chicago River interdisciplinary project with the leadership of VP Margie Martyn, and isolated Pseudomonas fluorescens ... 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

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

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

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

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

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

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

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

Coiled filamentous cyanobacterium Anabaena sp.

Nikon Small World Honorable Mention 2008 photomicrography competition, Dr. Petr Znachor, Institute of Hydrobiology, Ceske Budejovice, Czech Republic

Coiled filamentous cyanobacterium Anabaena sp. (600x)
Technique: Nomarski Differential Interference Contrast Read More

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

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

Auxarthron (Myxotrichium) umbrinum

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

Female blacklegged deer tick, Ixodes scapularis

With its abdomen engorged with a host blood meal, this image depicts a lateral, or side view of a female blacklegged, or deer tick, Ixodes scapularis.
The blacklegged or deer tick, Ixodes scapularis, transmits Lyme disease, a disease caused by a spiral shaped bacterial microbe, Borrelia burgdor... 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

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