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Delftia acidovorans

Delftia acidovorans (formerly Comamonas acidovorans) is an aerobic gram-negative rod. It is unique because produces an orange color in the medium with the addition of Kovac's indole because of the production of anthranilic acid from typtone, though the organism is biochemically indole-negative. ... Read More

Zika virus infects human neural stem cells

The Zika virus infects a type of neural stem cell that gives rise to the brain's cerebral cortex, Johns Hopkins and Florida State researchers report March 4 in Cell Stem Cell. On laboratory dishes, these stem cells were found to be havens for viral reproduction, resulting in cell death and/or di... Read More

Agar Art 2016 Contest Submit by May 6

We hope you've started plating your dishes! Here are some of the 2016 entries thus far. Show us your creative streaking! For contest entry rules visit: www.microbeworl.org/art. Submissions close May 6, 2016 11:59 P.M.EST.Entries pictured from left to right: Symbol of ASM, A Once in a Lifetime Ki... Read More

Unwashed vs washed hand

Students in the summer STEM program at Cabrillo (these were college age students) were asked to do a handprint of their unwashed hand then of their hand after washing. This is a before and after of what the majority of the plates looked like. Plates were incubated for 48 hrs at 37 degrees C ... 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

Methylobacterium sp Biofilms

We can see different biofilms types in liquid medium. In the same order than the picture: Methylobacterium variabile Type Strain / Methylobacterium aquaticum NO00 / Methylobacterium aquaticum NO42 / Methylobacterium aquaticum Type Strain / negative control Read More

TEST DETECTS ALL VIRUSES THAT INFECT YOU AND YOUR PET

A new test called ViroCap can detect thousands of viruses that make people and animals sick. Read More

Lab Agar Drawings: Chromobacterium violaceum shaped into Biohazard Symbol

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

Pictured is Chromobacterium violaceum shaped in a biohazard symbol. This drawing was done at a mic... Read More

Kirby-Bauer Testing: The Gold Standard for AST

Our sensitivity instruments rarely ever go down, but when they do our lab uses Kirby-Bauer testing to perform antimicrobial susceptibility testing in our laboratory. This testing involves placing antibiotic-infused discs on a standardized inoculum of bacteria spread in a lawn onto a Mueller Hint... Read More

SCIENTISTS FIND THE VIRUS THAT MAKES PIGLETS SHAKE

A newly discovered virus is the reason why some piglets shake so uncontrollably that they aren’t able to nurse. Read More

The pearly colonies

Yeast extract-mannitol agar (YMA), with the pH indicator bromothymol blue (BTB), is the medium used for rhizobia isolation and characterization.

In this pic, one Bradyrhizobium strain isolated from cowpea root nodule in Brazil showing a "white pearly colony" 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

Alien fungus!

Sometimes when a hairy beast of a contaminant grows on an old plate, the only thing to do is marvel at its beautiful rings and turn it into a cute cartoon. Any takers on the likely identity of this fungus? Read More

Tick tock -- sequencing the tick genome could help defuse the Lyme disease time bomb

The deer tick transmits Lyme disease and other diseases, which cause thousands of human and animal deaths annually. With about 10,000 new patients each year, occurrences of Lyme disease in Switzerland are amongst the highest in Europe, representing a substantial healthcare cost and threatening S... Read More

Many physicians overestimate ability to assess risk of Ebola, study finds

Researchers at Massachusetts General Hospital have found that the physicians least likely to encounter the infectious Ebola virus tend to be overly cautious even with low-risk patients. Read More

Why do some infections persist? Blame bacterial socialism, says new study

New research to be published January 13 in the journal Scientific Reports shows that some bacterial cultures adopt an all-for-one/one-for-all strategy that would make a socialist proud in preparing for the possibility of an antibiotic onslaught. 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

SOME CORAL-ALGAE COMBOS CAN HANDLE CLIMATE CHANGE

For some time, scientists have known that certain combinations of coral and algal species were more tolerant to temperature extremes than others, and therefore more likely to survive in the changing conditions predicted for the future. Read More

Unknown cultures

We took a few swabs around school - a few cultures have grown up that I am unable to identify. The first is this orange culture, which came from our water fountains (photo is 3 days after the sample was taken). Read More

Salmonella Group C1

Growth of Salmonella C1 on XLD agar showing the typical production of black pigment from H2S Read More

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