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Colonies of Blastomyces dermatitidis on blood agar plates

Colonies of Blastomyces dermatitidis on blood agar plates incubated at 30 C Read More

Dangerous enterohemorrhagic bacteria E. coli

Most Escherichia coli (E.coli) strains are harmless.But some, like enterohemorrhagic E. coli (EHEC), are a hazard to human health and life. Read More

Aspergillus fumigatus

Fragments from above compost pile, covered with Aspergillus fumigatus Read More

Bromocresol fermentation tubes (escherichia coli). note acid (yellow) and gas (bubble)

Bromocresol fermentation tubes (escherichia coli). note acid (yellow) and gas (bubble) Read More

Endospore Stain Bacillus cereus

B. cereus was grown on urea agar for 6 days at 37 degrees C to induce spore formation.
The endospore stain was done using malachite green as the primary stain and safranin as counter the stain. Malachite green was applied to the smear and set over a steaming water bath for 10 min (stain was no... Read More

Worms from Hell lecture at the Smithsonian (Picture)

(From left to right) NASA astrobiologist Danny Glavin, science writer Marc Kaufman, and geomicrobiologist and Princeton University professor Tullis Onstott, take questions from the audience at last night's Smithsonian-sponsored evening lecture entitled "Worms from Hell" that focused on the lates... Read More

Byssochlamys sp.

Byssochlamys sp. Asci. Nomarski (800x) 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

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

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

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

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

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

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

Human African trypanosomiasis

A false-coloured scanning electron microscope image of an African trypanosome, the parasite which causes sleeping sickness. 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

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

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

Ice Nucleation Bacteria, Twitter, and Me!

In this post from my microbiology/education blog, I discuss a post on Boing Boing recently that used a video I had made of ice nucleation bacteria. Ice nucleation bacteria are very interesting of course, and I link to the Boing Boing post. In addition, I provide an additional video of students... 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

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