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BacterioFiles Micro Edition 24 - Ant-Associated Actinomycetes

This episode: Bacteria help ants keep parasites out of their fungal gardens!


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The Invention of PCR

Few technical breakthroughs have changed the face of their field like the Polymerase Chain Reaction (PCR). Gene cloning, sequencing of complex genomes, DNA fingerprinting and DNA-based diagnostics are just some of the techniques that were either inefficient, crude or plain impossible before PCR.... Read More

TWiV 191: When two rights make a wrong

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Hosts: Vincent Racaniello, Alan Dove, Read More

TWiM 54 Letters

Jacob writes:


Hi all,

Saw this media release from the Australian Institute of Marine Science about researchers isolating a combination of probiotic bacteria to assist in the prevention of Vibrio infections of spiny lobsters in aquaculture and thought of TW... Read More

BacterioFiles Micro Edition 131 - Stacking Sucker Symbionts

This episode: Some insects have bacterial symbionts with super-small genomes inside their cells, and some of these symbionts have their own internal bacterial symbionts!


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BacterioFiles Micro Edition 31 - Bacterial Biofertilizer

This episode: Bacteria as fertilizer!


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El Podcast del Microbio Nº 195. Vida en Atacama (Life in Atacama desert)



























El podcast del Microbio Nº195 summarize the article by Wierzchos et al published in Geobiology about the microorganisms tha... Read More

TWiP 69 letters


Richard writes:


Hi Vincent and Dickson,


I enjoy TWIP, and often recommend it to my students. I'm a parasitologist, primarily a Leishmaniac, but I have learnt a lot from TWIP. I find it both more educational and entertaining than Car Talk.


The disc... Read More

TWiV 252: Who read the last email?

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Hosts: Vincent Racaniello, Dickson Despommier, Read More

BacterioFiles Micro Edition 17 - Radical Radiation Resistance

This episode: Using bacteria to recover precious metals like palladium!


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A new virology course at Columbia University

Tomorrow is the start of my new virology course at Columbia University. The course, Biology W3310, is aimed at advanced undergraduates and will be taught at the Morningside Campus of Columbia University. Read More

TWiM 65 Letters

Alexandra writes:


Dear TWIM-ers,


When I began listening to TWIV almost a year ago, I had just switched majors from philosophy to biology. I am now writing to you good people at TWIM at the end of my first undergraduate summer research gig, where I have had qui... Read More

TWiP 53 Letters

John writes:


Dear Vincent and Dickson,


I just heard your most recent TWIP. Please keep these podcasts going! I love listening to your podcasts and hearing your enthusiasm for my favorite biological topic, parasites. Remember that for every fan... Read More

Do We Need a Climate Solution for Indoors?

We typically spend close to 90 percent of our time inside - at school, work and home. While outdoor air quality is very important, so too is the quality of the air we breathe at home and the office. Yet most of us know very little about the condition of our indoor climate.  The chemicals ... Read More

HIV cure could be all in the 'mix'

Current HIV treatments do not eradicate HIV from host cells but rather inhibit virus replication and delay the onset of AIDS. However, a new research published in BioMed Central's open access journal, AIDS Research & Therapy describes an innovative approach to eliminate HIV in host by targeted ... Read More

Thirty years in my laboratory at Columbia University

Thirty years ago this month I arrived in the Department of Microbiology at Columbia University’s College of Physicians and Surgeons (P&S) to start my own laboratory. Thirty is not only a multiple of ten (which we tend to celebrate), but also a long time to be at one place. It’s clearly time to r... Read More

New Diagnostic Fast and Effective at Finding TB in Elephants: Benefits for Pachyderms and Public Health

A serological test is highly accurate at finding tuberculosis infection in elephants, and can determine such infection years before culture, according to a study in the August Clinical and Vaccine Immunology (click source to download the .pdf of the journal article). The issue is critical not on... Read More

Human infections with influenza H5N1 virus: How many?

The lethality of avian influenza H5N1 infections in humans has been a matter of extensive debate. The >50% case fatality rate established by WHO is high, but the lethality of the virus might be lower if there are many infections accompanied by mild or no disease. One way to answer this question ... Read More

Evolution of a DNA Sequence Over Time

One of the basic requirements of evolution is variation in a population upon which selection can act. One of the sources of variation is mutation in DNA. These changes may or may not be reflected in the ensuing amino acid sequence of a protein. This exercise explores the additive effects of m... Read More

Immunization Week 2011

In 2011, for the first time, countries across the WHO regions of Africa, Americas, Eastern Mediterranean, Europe and the Western Pacific are taking part in simultaneous immunization weeks. This unprecedented collaborated effort between the regions is building public and professional awareness of... Read More

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