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Quorum sensing genes discovered in a bacteriophage genome?

Recently, the discovery that certain bacteriophage encode bacterial gene silencing systems (CRISPR) that can counteract host defense systems demonstrated how mind boggling the evolutionary pathways between phage and bacterial host actually are. In this publication, these relationships are exten... Read More

MOOC: Pandemics and new viral infections (in Spanish)

New Massive Online Open Courses (MOOC) in Spanish about Pandemics and new viral infections.

This is a mini online open course about basic concepts of virus and pandemics. We answer questions as what is a virus?, how a virus multiplies inside a cell?, what is a pandemic?, why appear new influe... Read More

MaConkey Agar (Mac)

Organisms grown on MacConkey Agar at 37 degrees for 24 hours.
-Important Ingredients: crystal violet, bile salts, neutral red (color indicator), lactose
-Differential: used to identify and isolate lactose fermenting G- enteric bacteria mainly Enterobacteriaceae. Strong lactose fermentation pr... Read More

The Role of Vitamin D Supplements in Preventing and Treating Disease - ICAAC 2013

There is much interest in the role of nutrients and micronutrients in the support of host defense against infections. However, there is controversy in the ability of supplements to help prevent or treat infections. Speakers discuss research on the role of vitamin D supplements to prevent and/or ... Read More

More Evidence Shows Whooping Cough Evolving In Response To Its Vaccine

Researchers have found evolved pertussis, as whooping cough is scientifically known, in Finland, France, Italy, Japan and the U.S. As we previously reported, the evolved bacteria don't seem to be more dangerous than their predecessors. Nevertheless, the U.S. Centers for Disease Control and Preve... Read More

Mycobacterium smegmatis

Mycobacterium smegmatis grown on TSA for 96 hrs.
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TWiP 59 letters

Allan writes:


You have the best podcast on the web, hands down. I use your TWiP episodes in both my undergraduate and graduate classes.
Thanks.


I've recently seen a family in Hawaii with recurrent pathogenic Blastocystis hominis and Dientamoeba fragilis a... Read More

Watch This Week in Virology Episode 300 Live from ASM HQ Aug 26 7 pm ET

This Week in Virology, the podcast about viruses, celebrates its 300th episode on Tuesday, August 26, 2014 with a live recording at the Washington, DC headquarters of the American Society for Microbiology. This special episode w... Read More

TWiP 68 letters


Tim writes:


I listened to the latest TWIP this morning. Dickson mentioned the herbicide atrazine but thought it was a fungicide. It is actually a herbicide in the photosynthesis inhibitor class. Another bit of trivia about ag chemicals is that old chemicals like ... Read More

Scientists Discover Link Between Gut Microbiota And Colorectal Cancer

Colorectal cancer patients have fewer beneficial gut bacteria and more harmful microbes than those without the disease, researchers from the New York University School of Medicine report in Friday’s edition of the Journal of the National Cancer Institute.

While previous research had suggested... Read More

TWiM 63 Letters

Hugh writes:


Hi Vincent,


I really enjoyed hearing about Carl Woese in TWiM #50. You mentioned the controversy surrounding of Woese's 1977 discovery of Archea as a third domain of life, as it contradicted entrenched scientific beliefs. Although Archea soon foun... Read More

MWV Episode 87 - TWiV #291: Live from Colorado State University

Vincent, Rich, and Kathy and their guests Clodagh and Ron recorded this episode at the 33rd annual meeting of the American Society for Virology at Colorado State University in Ft. Collins, Colorado.


Hosts: ... Read More

TWiV 250: Wookie viruses



Hosts: Vincent Racaniello and Robert Garcea


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Mundo de los Microbios - Episodio 106 - Ricardo Santos

Aunque el género Mycobacterium es asociado a infecciones tales como la lepra y la tuberculosis, hay un gran número de especies que son por lo general no patogénicos o patógenos oportunistas. En el episodio de hoy tenemos al Dr. Ricardo Santos del Instituto Superior Técnico de Lisboa, Portugal... Read More

TWiV 251: Don't kiss the camel



Hosts: Vincent Racaniello, Dickson Despommier, Read More

Microbes are going to save the world | Bonnie Bassler (video)

Should we only consider bacteria as harmful to our bodies?

Bonnie Bassler is a molecular biologist who has made a stunning discovery: bacteria 'talk' to each other using chemical signals that enable them to act as a unit, mount attacks and coordinate defence. This phenomenon of bacterial com... Read More

At least 59 people dead in Guinea Ebola outbreak

An Ebola outbreak has killed at least 59 people in Guinea, UNICEF said, as the deadly hemorrhagic fever has quickly spread from southern communities in the West African nation.

Experts in the country had been unable to identify the disease, whose symptoms -- diarrhea, vomiting and fever -- we... Read More

Shingles Vaccine Coverage Low in Elderly Americans - ICAAC 2013

Almost 1 out of every 3 people in the United States will develop shingles during their lifetime. Despite the approval and recommendation by the FDA of a shingles vaccine for adults over 50, only 16% of American seniors over 60 are vaccinated. Vaccinations are even lower for those aged 50-60. A... Read More

My Dishwasher Is Trying to Kill Me: Extreme Conditions Suit Pathogenic Fungus

A potentially pathogenic fungus has found a home living in extreme conditions in some of the most common household appliances, researchers have found. A new paper published in the British Mycological Society journal, Fungal Biology, published by Elsevier, shows that these sites make perfect habi... Read More

BacterioFiles 173 - Illuminated Invader Inhibits Irritation

This episode: Virus helps to modify mice such that certain colors of light can cause or prevent pain!


(10 MB, 10.8 minutes)


Show notes: 
Jour... Read More

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