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Shiga toxin producing Escherichia coli on blood agar

Shiga toxin producing Escherichia coli grown on blood agar. The organism was isolated from smallholdings' cattle, Bangladesh. Read More

Shiga toxin producing Escherichia coli on EMB agar

Shiga toxin producing Escherichia coli grown on EMB agar. The organism was isolated from smallholdings' cattle, Bangladesh. Read More

Aspergillus clavatus

Picture carefully taken with my iphone under a dissecting microscope. Read More

Antibiotic Producing Fungal Colony

This fungal colony, in association with a few others, was grown on SDA and appears to be an antibiotic producer. The compounds that it's producing appear orange and red. The colony grew and began producing compounds on the agar after five days incubation at 30 degree Celsius. This plate is part ... Read More

Partial Acid-Fast stain of Cryptosporidium species

Cryptosporidium (Crypto) is a parasite that causes diarrheal disease. Crypto can live in the intestine of humans and animals and is passed in the stool of an infected person or animal. This parasite is very resistant to chlorine-based disinfectants and is protected by an outer shell that allows ... Read More

Water drop like colonies on nitrogen free medium

I am Bibha Dahal, Graduate Teaching Assistant from South dakota State University, Brookings, SD. I have attached the image of nitrogen fixing bacteria, with water drop like appearance, grown on Nitrogen Free Medium, incubated at 28 degree Celsius for 4 days at microaerophilic condition.
Thank ... Read More

Unidentified Microbes on SDA

Unidentified soil microbes on SDA plates; most colonies are producing compounds (droplets can be seen on top of the colonies; possibly antibiotic producers). This picture was taken by me, Kaitlynn Fenley. The plate is from the class that I am a teaching assistant for at Louisiana State Universit... Read More

Fungal close up

Close up image of the edge of an unknown fungal contaminant showing concentric rings of black spore formation (center of colony) and nonspore forming white hypae on the outer edge of the colony. Fungal contaminant was found on TSA after a month of refrigerated temperatures, presumably an air bo... Read More

Love and war between kingdoms

Candida albicans and Pseudomona aeruginosa growing on YPD. Read More

Paenibacillus glucanolyticus spore

Paenibacillus species have been isolated from a wide variety of sources including soil, water, the plant rhizosphere, plant materials, food, fodder, faeces and diseased insect larvae. They are facultative anaerobes or strict aerobes and mostly motile, endospore forming rods. This is the first ti... Read More

Pseudomonas sp. on Eosin-Methylene Blue Agar

Pure culture of Pseudomonas sp. isolated from rain collected at Virginia Tech, USA.

Incubation Conditions: 48 hours at 28°C + 24h at 20°C on EMB Agar

It can be distinguished two types of colonies following a gradient of culture density.
Read More

Happy Microbial Valentines Day---In Words of Living Light!

In this short blog post, I "write" on Petri dishes with bioluminescent bacteria to create words and poems in "living light." I also write a haiku to quorum sensing in the same style! Read More

Swarming Motility of Pseudomonas aeruginosa

Strain: Pseudomonas aeruginosa PA14
Medium: M8 minimal medium agar plates
Incubation Conditions: 48 hours at 37°C
Pseudomonas aeruginosa is a gram-negative, rod-shaped and monoflagellated bacterium that has an incredible nutritional versatility. Swarming motility, a flagellum-dependent behavi... Read More

MRSA on Spectra agar

Pictured here are blue colonies of Methicillin-resistant Staphylococcus aureus (MRSA) growing on Remel Spectra MRSA medium. Spectra media contains a chromogen that yields a blue color as a result of phosphatase activity. The phosphatase enzyme is present in many staphylococci, including Staphylo... Read More

Spiraled microbe

Photograph of 400X magnified image of biogas digestor sample. A strange spiraled type microbe seen (probably like left handed DNA helix). The microbe is shown with an arrow. Has anyone seen such microbial structure? Read More

Streptococcus pneumoniae mucoid strain

Streptococcus pneumoniae cells are Gram-positive, lancet-shaped cocci. Usually, they are seen as pairs of cocci, but they may also occur singly and in short chains. In this photo a mucoid strain on blood agar showing alpha hemolysis (green zone surrounding colonies). Note the zone of inhibition ... Read More

Microorganisms isolated from rain

Rain plated on Eosine Methylene Blue Agar
Incubation Conditions: 4d at 20°C

This drawing was done in the Pr. Vinatzer lab at Virginia Tech, Blacksburg, VA. Read More

Enterobacteria deposited with rain

Created by: Caroline L. Monteil, PhD
Isolates: Two strains enterobacteria isolated from rain and mixed together.
Agar: Eosine Methylene Blue Agar
Incubation Conditions: 48 hours at 20°C

This drawing was done in the Pr. Vinatzer lab at Virginia Tech, Blacksburg, VA. Read More

Fun Agar Drawings: Chromobacterium violaceum, Staphylococcus aureus

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

Pictured is Chromobacterium violaceum and Staphylococcus aureus shaped in a... 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
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