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TWiV 311: Bulldogs go viral

Vincent visits the University of Georgia where he speaks with Zhen Fu and Biao He about their work on rabies virus and paramyxoviruses.


Host: Vincent Racaniello. Guests:  Read More

TWiM 104 Letters

Mark writes:

Hello TWiM-aggregate,

Its warm and sunny Spring weather here in California’s Bay Area. The fourth year
of Drought is upon us - please send water.

Speaking of water, below is a humorous incident that could be used to draw
attentio... Read More

TWiV 326: Giving HIV a flat tyr

Hosts: Vincent RacanielloAlan Dove, and  Read More

Happy Holidays!

Large TSA plate: yellowish organism is Staph aureus, red organism is Serratia marcescens. Grown for 24 hrs at 37 degrees C. Read More

TWiM 97 Letters

Dennis writes:
hi Doc,

A paper just published in nature:


reports an effective antibiot... Read More

Bacteria in ancient flea may be ancestor of the Black Death

CORVALLIS, Ore. - About 20 million years ago a single flea became entombed in amber with tiny bacteria attached to it, providing what researchers believe may be the oldest evidence on Earth of a dreaded and historic killer - an ancient strain of the bubonic plague. 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

TWiP 83 letters

Robin writes:

Malaria: shaking chills & fever (followed by sweats, not specifically mentioned in this case), is a characteristic of malaria that is unforgettable once one has had it (I had malaria four times).

Thick blood smears is de rigueur.
So... Read More

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

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

Cell to Cell

Bacteria were 'painted' on agar and sealed in epoxy. Work by Maria Penil in the Berkmen lab 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

New Diversity for Lager Beers

Washington, DC – September 25, 2015 - Unlike ales, lager beers differ little in flavor. But now, by creating new crosses among the relevant yeasts, Kevin Verstrepen, PhD, Stijn Mertens, and their collaborators have opened up new horizons of taste. The research is published in the September 25 Ap... 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

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

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 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

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

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

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