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Clues to Common Food Poisoning: Salmonella Creates Environment in Human Intestines to Foster Its Own Growth

A study led by researchers at UC Davis has found how the bacteria Salmonella enterica -- a common cause of food poisoning -- exploits immune response in the human gut to enhance its own reproductive and transmission success. The strategy gives Salmonella a growth advantage over the beneficial b... Read More

Biology by Design

Jim Collins, a College of Engineering professor of biomedical engineering and codirector of the Center for BioDynamics at Boston University, delivers the 2008 University Lecture, Biology by Design. He talks about his research at BU, including using noise to enhance sensory function and making an... Read More

How Does a Pathogen go From Temp to Full-time? Parallel Evolution in P. aeruginosa

Once Pseudomonas aeruginosa colonizes the lungs of a cystic fibrosis patient, it begins transforming itself from a squatter into a fully-invested resident, eventually establishing a chronic airway infection. A study just released by mBio tracked the gene expression patterns of P. aeruginosa dur... Read More

BacterioFiles Micro Edition 13 - Formidable Filaments Found

This episode: Discovery of (rather pretty) giant archaea!


Unable to embed Rapid1Pixelout audio player. Please double check that:  1)You have the latest version of Adobe Flash Player.  2)This web page does not have any fatal Javascript errors.  3)The audio-player.js file of Rapid1Pixelout has been included.

... Read More

Scientists uncover process enabling toxoplasmosis parasite to survive homelessness

Parasites such as Toxoplasma gondii invade host cells, replicate and then must exit to find new host cells to invade. Traveling outside their host cell exposes the parasites to environmental stresses that limit how long they can remain viable while searching for new host cells.

The researcher... Read More

Dirty money? No, plastic cash means fewer bacteria, researchers say

Researchers from the Australia’s University of Ballarat have dispelled an urban myth by showing banknotes do not carry dangerous levels of bacteria.

But they found polymer banknotes, such as those used in Australia, carry the least quantity of contamination.

Australia's notes are manufactu... Read More

United States: Decrease in Bubonic Plague Cases May Be an Effect of Climate Change

Global warming may have one minor but previously unknown benefit, scientists said this month: it may be cutting down cases of bubonic plague in the United States.

About 10 to 20 Americans catch plague each year, and 1 to 3 die of it, according to the Centers for Disease Control and Preventio... Read More

Possible 'Persistence' Switch for Tuberculosis Found: Computer Model Finds Probable Genetic Mechanism for TB Dormancy

An examination of a portion of the tuberculosis genome that responds to stress has allowed Rice University bioengineers Oleg Igoshin and Abhinav Tiwari to zero in on a network of genes that may "switch" the disease into dormancy.

The bacteria that cause tuberculosis (TB), Mycobacterium tuberc... Read More

Life Is Tough, Especially for Microbes

The list of ways for life to make a living keeps getting longer. There are the obvious: like turning light into chemical energy like plants do. Or eating plants like many animals do.

Then there are more specialist methods: for example, pairing the hydrogen produced by radioactive decay with s... Read More

How a gene turns a bug into a superbug -- and what to do about it

There's been a lot of talk recently about NDM-1, a gene that gives many bacteria a weapon against carbapenems, an important class of antibiotics. Because many of these bacteria are already resistant to other classes of antibiotics, NDM-1 renders them immune to almost anything we throw at them. ... Read More

Got Operons? Big Economic Gain in Co-transcribing Proteins in Complexes

Every choice has its trade-offs, and while the advantages of many choices are easy to discern, other situations require closer analysis. In a paper just released by mBio, scientists have modeled the economic trade-offs involved in putting genes in an operon, and they’ve shed some light on why i... Read More

TWiM iTunes Reviews

Three cheers for Dr. Racaniello!!!


by Camp Connell Steve - Feb 28, 2011


Dr. Racaniello has launched his third superb podcast! Having listened to all the This Week in Virology and This Week in Parasitism podcasts, I awaited with anticipation when he announced h... Read More

TWiP iTunes Reviews


Great
by Nelsonaa


2nd favorite podcast right after twiv




Extremley Educational!
by AweakyNot


Even my 14 & 18 year old st... Read More

TWiV iTunes Reviews




TWiV listeners have spent their valuable time writing comments about the podcast on iTunes, and it's a shame that most people don't see them. I'm putting them here as a way of thanking them for their time, and for listening. This i... Read More

Basidiobolus haposporus

Basidiobolus haposporus. Adhesive spores forcibly discharged and attached to cover of a petri dish. Lactophenol cotton blue stain Read More

Warrior worm parasites with huge mouths could be the future of biomedicine

Parasitic worm colonies are known to invade and castrate a tiny California horn snail, spawning thousands of tiny soldiers that take up 25% of the snail's body weight. These tiny warriors could actually revolutionize how we fight infections in humans.

As much as these colonies are bad news fo... Read More

Researchers developing way to distinguish between salmonella strains

As scientists with the federal government search for the source of the salmonella that made thousands of people sick this summer and trace how it spread, researchers in Penn State's College of Agricultural Sciences are developing a new and more accurate method of acquiring the bacteria's identit... Read More

Study: Flu shot may help reduce heart attacks

A flu shot can do more than just fight against influenza, a new study suggests. It may also fight against heart attacks.

Adults who take the flu vaccine may be less likely to get their first heart attack the next year, researchers say.

The study, published Monday in the Canadian Medical As... Read More

Vaccine Research to Protect the Public From Weaponized Plague Bacteria

New research on the immune system’s response to plague could improve efforts to vaccinate the public against the world’s oldest form of biological warfare.

Researchers have been working for several years to develop a vaccine for weaponized forms of plague, which is one of the world’s deadlies... Read More

Seagulls 'may be spreading superbugs'

Scientists fear migratory birds may be spreading hard-to-treat infections after discovering seagulls can carry antibiotic-resistant bacteria. Portuguese researchers analysed 57 samples of droppings from the yellow-legged Caspian Gull Larus Cachinnans. They found that one in 10 harboured bacteria... Read More
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