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Assortment in colony biofilms

Effect of founder cell density on the spatial pattern formation in colony biofilms.
The colony biofilms were obtained by following the protocol described in van Gestel et al (2014) ISME Journal (doi: 10.1038/ismej.2014.52). Briefly, GFP and mKATE2 labeled Bacillus subtilis strain were mixed in ... Read More

Microbe vs. Mineral - A Life and Death Struggle in the Desert

Although the bursts of rainbow colors in this photograph are mesmerizing, microbes fight for their lives in the background. Chemist Michael P. Zach of the University of Wisconsin-Stevens Point, snapped this image of a salt sample he collected in a hot, arid valley near Death Valley National Park... Read More

ASM

by: cls. sundar khadka,
PG in clinical microbiology,
institute of medicine(IOM), TU teaching hospital , kathmandu, nepal. Read More

Methyl Red/Vogoes-Proskauer (MR-VP)

Methyl Red/Vogoes-Proskauer (MR-VP)
One medium used for two separate but related tests, identifying butanediol (VP) or acidic fermentation products (MR) as part of the IMViC test used in the identification of Enterobacteriaceae.

•Methyl Red (MR): detects the ability of an organism to produc... Read More

Salmonella Sps

Salmonella Kentucky isolated from human stool at MVIDH, DELHI Read More

Mycobacterium smegmatis Acid Fast Stain

Acid Fast stain done on a mix of Staphylococcus aureus and Mycobacterium smegmatis. Carbol fuchsin was applied to the smear and set over a steaming water bath for 10 min to help penetrate the mycolic acid in the cell wall, then rinsed with acid alcohol which washes the carbol fuchsin out of al... Read More

DNase Agar

DNase agar can be used to differentiate between potentially pathogenic S. aureus and other Staphlococcus by looking for the presense of the exoenzyeme DNase. After growth for 24-48 hrs 1N HCL is added to the agar plate. Addition of HCL precipitates DNA in the media causing cloudiness unless t... 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

Terbinafina with Fluconazole. The combination that inhibiting growth of Candida spp

Any ideas or explication why this combination of antimycotics drugs are inhibiting zone of growth of Candida spp. Econazole make the same round. Sabouraud with chloramphenicol agar was used . 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

Merry Microbial Holidays!

Wishing every single microbial enthusiast and their families the merriest of microbial holidays! And how better than with bioluminescent ornaments on a Luxmas Tree! Read More

E. coli colonies on Eosin Methylene Blue agar plate

Isolates colonies of E. coli with distinct green metallic sheen on EMB agar plate. Culture isolated from drinking water sample Read More

Nematode Host Meets Bacterial Pathogen

This image shows the nematode host Caenorhbaditis elegans encountering the bacterial pathogen S. marcescens. Natural selection imposed by the co-evolving pathogen led to the evolution and maintenance of bi-parental sex in the host population.

The host and the pathogen were experimentally co-e... Read More

Fluid Thioglycollate Media

Organisms grown in Fluid Thioglycollate Media w/out resazurin dye is a reducing media that uses sodium thioglycollate to chemically combine with dissolved oxygen to deplete the oxygen in the media. All organism except for Neisseria sicca were grown for 48 hours at 37 degrees C. Neisseria sicca i... Read More

Suspected filariform Strongyloides stercoralis

Larva of Strongyloides was seen after performing wet mount method for the detection of stool samples from the community based study. Read More

microbes style

A microorganism (from the Greek: μικρός, mikros, "small" and ὀργανισμός, organismós, "organism") is a microscopic organism, which may be a single cell or multicellular organism. The study of microorganisms is called microbiology, a subject that began with Antonie van Leeuwenhoek's discovery of m... Read More

Fibroblast Expressing Ebola Virus

Honorable Mention - 2008 Olympus Bioscapes International Digital Imaging Competition

Dr. David McDonald
Case School of Medicine
Cleveland, OH, USA
Specimen: Fibroblast Expressing Ebola Virus
Technique: Fluorescence/Deconvolution

Click "source" to view image. Read More

Unknown Agar Contaminate

Unknown contaminant found on a TSA plate after being in the refrigerator for 1 month. Organism had grown throughout the media, was pale yellow and mucoid. Read More

Mycobacterium smegmatis line inoculation

Line inoculation of Mycobacterium smegmatis on a TSA slant showing friable, dry crusty, growth. Culture was grown for 3 days at 37 degrees. Read More

Casein Media

Casein Plates contain the major milk protein found in milk. Organisms were grown on Casien agar for 72 hours at 37o C to look for the presence of the exoenzyme proteases/caseases . (A): Pseudomonas aeruginosa, casein hydrolysis, as noted by a zone of clearing around the organism, as well as a ... Read More

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