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Chaetoceros debilis (marine diatom)

Chaetoceros debilis (marine diatom), a colonial plankton organism (250x). 1ST PLACE 2013 PHOTOMICROGRAPHY COMPETITION. Credit: Wim van Egmond, Micropolitan Museum, Rotterdam, The Netherlands

Wim van Egmond compared Nikon’s Small World competition to “a colorful stained-glass window that opens... 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

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

Aggregates of symbiotic/ commensal spiroplasma-like organisms (SLOs) in the midgut

Spiroplasmas are bacteria in the Class Mollicutes that are frequently associated with insects and/or plants. This confocal laser scanning micrographs show aggregates of symbiotic/ commensal spiroplasma-like organisms (SLOs) in the midgut (mg) and filter chamber (fc) of a leafhopper, Dalbulus mai... 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

Paramecium

Paramecium sp. showing the nucleus, mouth and water expulsion vacuoles (40x). 4th Place 2013 PHOTOMICROGRAPHY COMPETITION, Nikon Small World

Credit: Rogelio Moreno Gill Read More

Teaching Freshmen about Transformation, Drug Resistance, and Gene Regulation!

In this blog post, I describe how I use the commonly available pGLO plasmid to teach freshman students basic concepts about transformation, receptor recognition, drug resistance mechanisms, and gene regulation. Oh, and fluorescence via GFP! 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

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

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

INDIA INK Preparation for Cryptococcus .

india ink preparation for cryptococcus neoformans.

this organisism is isolated from suspected of cryptococcosis from HIV infected patient, 45yrs/M.this work is performed at , deparment of Mycology at TU, Teaching Hospital, Ktm, nepal.
Phenotypic test done for conformation of this organisms... 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

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

P.aeruginosa fluoresce when exposed to U.V radiation

The Bluish Green Pigment of P.aeruginosa fluoresce when exposed to U.V radiation. Read More

Bacterial Mat

Yellowstone caldera, Wyoming. Golden brown thermophilic cyano-bacteria seen in the waters surrounding one of the hydrothermal vents. Read More

Modified Ziehl Neelsen Stained Cyclospora cayetanensis

Hi, I am doing a research in Cryptosporidium parvum and Cyclospora cayetanensis infection among School children of kathmandu at Public health research laboratory, the Institute of Medicne, kathmandu.

This is a Modified ZN stained image of Cyclospora cayetanensis isolated form a 5 year School... 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

Growth of Serratia marcescens bacteria on bread

Growth of Serratia marcescens bacteria on bread: The Bacteria were suspended in tap water and placed on the bread. It was incubated foe 3 days in RT. Read More

Yellowstone Caldera, Wyoming

Bacterial mats, golden brown in color, seen at the outer edges of Chromatic Pools. The blue water in the center is the hottest water at ~199 F and cooling to ambient the farther you get from the center. Cyanobacteria grow around 163 F or lower. Read More

Octopic cultivation

Cute octopus-like device for anaerobic cultivation of cellulolytic bacteria aimed to replace O2 with argon. Situated at the Faculty of Biology, Moscow State University, Russia. Read More

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