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"I kissed a plate... and I liked it."

What do you get when you kiss a Petri dish? Bacteria and yeast colonies that grow into a pretty collage composed of different colors and morphologies. This is an LB agar plate incubated at room temperature for several days. Read More

Vitamin A supplementation may cause the immune system to 'forget' past infections

Although vitamin A supplementation can have profound health benefits when someone is deficient, new evidence is emerging to show that vitamin A supplementation above and beyond normal levels may have negative health consequences. A new research report published in the July 2015 issue of the Jour... Read More

TWiP 89: Day TWiPers

Vincent, Dickson, and Daniel reveal last week's case study and introduce a new one concerning a patient who traveled to Belize.


Hosts: Vincent Racaniello,&... Read More

Too exhausted to fight -- and to do harm

An 'exhausted' army of immune cells may not be able to fight off infection, but if its soldiers fight too hard they risk damaging the very body they are meant to be protecting, suggests new research from the University of Cambridge. Read More

BacterioFiles 233 - Messy Microbes Maintain Mouse Microbiota

This episode: Mice in less sanitary conditions have more diverse gut communities and perhaps less allergy!


(8.15 MB, 8.8 minutes)


Show notes: 
Read More

Bacterial enzyme may help people quit smoking

Current smoking cessation aids fail in 80 to 90 percent of smokers. The idea behind this therapy would be to destroy nicotine before it reaches the brain—depriving a person of the “reward” of nicotine that can trigger relapse into smoking. Pseudomonas putida, a bacterium typically found in tobac... Read More

ASM Live at #ICAAC / ICC - Microbiosensor: A Device for Monitoring Bacterial Contamination in Contact Lens Cases

Nishal Govindji-Bhatt, Post-doctoral Research Associate at the University of Manchester, United Kingdom, and Curtis Dobson, PhD, University of Manchester, discuss how to best avoid eye infection caused by poor contact lens case cleaning.


Guests:


Fungus in my brothers sports drink

Unopened sports drink containing a fungal contaminant Read More

TWiM 110 Letters

Trudy writes:


I'm sorry, I may have missed something, but the mechanism behind an effective vaccine is still unclear to me, since infection with F. tularensis does not confer protection. How would a vaccine work?


Katy Bosio replies:


In... Read More

Scientists unravel elusive structure of HIV protein

COLUMBIA, Mo. - HIV, or human immunodeficiency virus, is the retrovirus that leads to acquired immunodeficiency syndrome or AIDS. Globally, about 35 million people are living with HIV, which constantly adapts and mutates creating challenges for researchers. Now, scientists at the University of M... Read More

TWiV 344: Glaswegians go viral

Host: Vincent Racaniello


Guests: Ruth Jarrett Read More

What Should First Year Students Learn About Microbiology?

Many institutions, such as my own, only have one microbiology course. In this second "Mu-Tube" video, I ask my current junior and senior Microbiology students what *they* think first year students ought to know about #MattersMicrobial. I think their opinions are interesting, and will inform my... Read More

TWiP 88: French foreign lesion

Vincent, Dickson, and Daniel discuss how a secreted protein from the protozoan parasite Theileria transforms its host cells via a cellular proto-oncogene.


Hosts:  Read More

Spiraled microbe

Photograph of 400X magnified image of biogas digestor sample. A strange spiraled type microbe seen (probably like left handed DNA helix). The microbe is shown with an arrow. Has anyone seen such microbial structure? Read More

TWiM 107 Letters

Jim writes:


Hi Vince,
For your interest in listening to physics, there is a podcast called The Titanium Physicists Podcast. They use a conversational format similar to what you use. They have a panel of experts and a guest who is not a physicist but who is accom... Read More

TWiM 109 Letters


Geoffrey writes:


Dear Doctors:


I just went to my semi-annual dental appointment and I thought of a potentially interesting oral health monitor - the plaque biofilm that they scrape off your teeth during the cleaning. Brush immediately before the cleaning ... Read More

Trichome

Pictured is a plant structure called a trichome that was found in a felines' urine sediment collected by cystocentesis. It is surrounded by many cocci and debris. The picture was taken with a smartphone at 400x magnification with no staining. Read More

TWiM 108 Letters

Nervous in San Diego writes:


Dear Professors of TWiM,
I was recently introduced to TWiM by a neighbor. For the last few weeks I have been listening to the backlog of TWiM podcasts, mainly while walking our dog. Regrettably, our dog is a lousy conversationalist. L... Read More

Treating gum disease with oral microbiota transplants

According to the American Academy of Periodontology, about half of American adults have periodontal disease, which affects gum tissues and the bones supporting the teeth. Apparently, the prevalence of periodontal disease increases with age, with the highest prevalence for those that smoke, thos... Read More

How small genetic change in Yersinia pestis changed human history

CHICAGO -- While studying Yersinia pestis, the bacteria responsible for epidemics of plague such as the Black Death, Wyndham Lathem, Ph.D., assistant professor in microbiology-immunology at Northwestern University Feinberg School of Medicine, found a single small genetic change that fundamentall... Read More
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