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Tracheal aspirate

Tracheal aspirate. Gram stain smear (1200X) Read More

Slime producing Staphylococcus epidermidis on Congo Red agar

Slime production by Staphylococcus epidermidis on Congo Red agar; demonstrated by black colored colonies. Slime production is one of the most important virulence factors produced by Coagulase negative Staphylococci.

The colonies of slime non-producing strains remain pink to red.
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

fungus: colony pic. of Trichophyton mentagrophytes.

this is colony pic of T. mantagrophytes grows on dermasel media after 12 days of incubation at 30'C. this study is done for our research work from superfical mycoses s suspected cases.specimens taken from trunk as skin scrapping suspected of T. corporis.microscopic pic of this colony shows p... Read More

Infection with multiple HIV-1 variants leads to poorer clinical outcomes

HIV-1 infection with multiple founder variants points to poorer clinical outcomes than infection with a single variant, according to a paper published today in the journal Nature Medicine. Read More

Harvest Season

Saccharomyces cerevisiae is a species of yeast. It is the active agent responsible for our most basic foods - bread, wine, and beer since ancient civilizations. It has been long since humans have tried to understand how to make them more productive. However, it was not until the Genomic Era that... Read More

Chromobacterium violaceum, Staphylococcus aureus

Created by: Michelle Vu, Research Associate, BS Microbiology
Isolate: Chromobacterium violaceum, Staphylococcus aureus
Agar: Blood Agar
Incubation Conditions: 24 hours at 37C + 24 hours at Room Temperature

Pictured is Chromobacterium violaceum and Staphylococcus aureus shaped in a valentin... Read More

Birds that eat at feeders more likely to get sick, spread disease

BLACKSBURG, Va., Sept. 17, 2015 - Wild songbirds that prefer to eat at bird feeders have an increased risk of acquiring a common eye disease. In turn, these birds also spread the disease more quickly to their flock mates, according to an international research team led by Virginia Tech scientist... Read More

Persisters - Small step towards Antibiotic resistance

Chromobacterium violaceum is a gram negative bacterium known to produce a natural antibiotic violacein which has other additional properties as well.
Here I was testing the MIC for a range of antibiotics and found a amazing result wherein i could clearly see "persisters" which will at a later s... Read More

What do we breathe?

Results of analysing air by Using Merck Millipore Mas 100 Eco Air Sampler. Here i used DRBC agar and i got some molds. It was 100 lt volume. there is no yeast but we can see clearly molds. Read More

Love and war between kingdoms

Candida albicans and Pseudomona aeruginosa growing on YPD. Read More

Tobacco bacterias are potential cause of URI's

As if another reason was needed to quit smoking, though this one is certainly a doozy. Read More


These bacteria-infecting viruses, phages for short, are the most abundant life-form on the planet, their number far exceeding that of stars in the universe. Trillions inhabit each of us.

Photograph by Department of Microbiology, Biozentrum, University of Basel/Photo Researchers, Inc., All Ima... Read More

Streptococcus pyogenes on blood agar

Streak plate of Streptococcus pyogenes (incubated @ 37 degrees C for 48 hrs) showing beta hemolysis, complete lysis of red blood cells, around the isolated colonies. Image taken using transmitted light. Read More

Spiral IV

Honorable Mention for Illustration: NSF 2004 International Science & Engineering Visulization Challenge

X-ray crystallographic data was used from real DNA molecules to paint a unique portrait of the double helix. The image omits the chemical bonds that crisscross the center of the molecule, s... Read More

Creative "Extra Credit" Projects in Microbiology!

In this blog entry, I explore how students can use their creativity to learn microbiology in innovative and often artistic ways. It makes learning more personal! Read More

Conidiophores in Neurospora crassa

This is an 3D image of conidiophores of the filamentous fungus Neurospora crassa. Conidiophores are hyphae which differentiate to produce asexual structures named spores or conidia. The image taken using a confocal microscope shows conidiophores stained with a fluorophore which stains components... Read More

What could this colony be ?

Dear Members,

I happen to come across some colonies (I thinks its a bacterium) on some left over yoghurt and was wondering if someone could help me to identify it.

About the colonies.

I had left some yoghurt in the fridge for some days. I noticed that the yoghurt surface has been stain... 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


A Time Lord needs his TARDIS to embark on fantastic discoveries. These LB agar plates contain a colorless reagent called X-gal, which is the sugar galactose linked to a dark blue dye. Some microbes can synthesize an enzyme (β-galactosidase) that snips the X-gal in two, releasing the blue color a... Read More
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