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Ebola Outbreak 2014 2015 by Dr. Fauci


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Echinococcus granulosus

This is a picture of Echinococcus granulosus from an infected liver specimen recently received in our laboratory. It is pictured in a saline wet mount at 40X magnification. The picture shows an evaginated scolex from an immature worm with hooklets.

The adult worm of Echinococcus granulosus l... Read More


Neurons and biological shapes is a common theme in the works of the artist Maria Penil. Here she painted with yellow Nesterenkonia, orange Deinococcus and Sphingomonas isolated for their attractive colors as contaminants in the Berkmen lab. After growing the plates for 2 days at 30C, the artist ... Read More

Pseudomonas aeruginosa with black extracellular pigment

Pseudomonas aeruginosa isolated from sputum into department of Microbiology - Riuniti Hospital Reggio Calabria .
This strain of Pseudomonas secretes brown/black extracellular pigment: pyomelanin.
Photo from D'Aleo Francesco archive. Read More

TWiV 319: Breaking breakbone

The TWiVers review the outcomes of two recent phase 3 clinical trials of a quadrivalent dengue virus vaccine in Asia and Latin America.

Hosts: Vincent Racaniello 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

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

TWiV 314: Einstein goes viral

Vincent travels to Albert Einstein College of Medicine where he speaks with Kartik, Ganjam, and Margaret about their work on Ebolavirus entry, a tumor suppressor that binds the HIV-1 integrase, and the entry of togaviruses and flaviviruses into cells.

Host:  Read More

TWiV 312: She sells B cells

The TWiVbolans discuss the finding that human noroviruses, major causes of gastroenteritis, can for the first time be propagated in B cell cultures, with the help of enteric bacteria.

Hosts:  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

MMP #5: Fruitflies, microbes, and aggression with Jeremy Brownlie

Host: Jeff Fox with special guest, Jeremy Brownlie.

Jeremy Brownlie of Griffıth University in Brisbane, Australia, talks with Jeff Fox about how bacteria influence aggressive behavior in an animal. Fruit flies infected with the wMelPop strain of Wolbachia were less aggressive than the... Read More

TWiP 82 letters

Allan writes:

Dear Vincent, Dickson and Daniel,

I like your idea of a TWIP coffee mug prize (or maybe a mug discount).

In this second case study you presented, the present symptoms are pretty vague, but his history is interesting. Also since with ... 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

TWiP 79 letters

Jesse writes:

Doctors TWiP,

I came across this paper and thought it sounded interesting for a discussion on TWiP:

Colonisation resistance in the sand fly gut: Leishmania protects Lutzomyia longipalpis from bacterial infection
Read More

TWiM 100 Letters

Matt Daugherty writes:

I just listened to the latest TWiM. Thanks for covering our horizontal gene transfer paper! It was great to hear you all talk about it and give your thoughts.

With regards to the selective pressure for retention of the Dae’s in genomes o... 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

TWiV 321: aTRIP and a pause

Paul Duprex joins the TWiV team to discuss the current moratorium on viral research to alter transmission, range and resistance, infectivity and immunity, and pathogenesis.

Hosts: Vincent Racaniel... 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

TWiP 91 letters


Heather writes:

Dear Dr.s R, D & G,

I really hate to criticize learned professors, especially my elders. I suspect I may be being overly - sensitive or perhaps it is a cultural difference. However, the "over-talking" is decreasing the qualit... Read More

Love and war between kingdoms

Candida albicans and Pseudomona aeruginosa growing on YPD. 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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