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BacterioFiles 187 - Bacteria Bolster Bedbug Biotin

This episode: Some Wolbachia bacteria produce vitamin B7 for their insect hosts!


(7.1 MB, 7.75 minutes)


Show notes: 
Journal Paper


Read More

BacterioFiles 229 - Spore-formers Stimulate Serotonin

This episode: Bacteria in mouse guts control the production of serotonin, an important neurotransmitter!


(10.4 MB, 11.3 minutes)


Show notes: 
Ne... Read More

BacterioFiles 197 - Fucose Feeds Friendly Fighters

This episode: When sensing an infection, mice make sure to keep their gut bacteria well-fed. And it pays off!


(11.8 MB, 13 minutes)


Show notes: 
Read More

BacterioFiles 228 - Bacteria Beat Bat Blight

This episode: Bacteria isolated from bats' skin inhibits the growth of bat-killing fungus!


(7 MB, 7.6 minutes)


Show notes: 
News item/<... Read More

TWiM #100: Omnis cellula e cellula

Hosts: Vincent RacanielloMichael Schmidt, ... Read More

TWiV 274: Data dump

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.

Hosts: Vincent Racaniello, Dickson Despommier, Read More

TWiM #85: Oscillation in the ocean and a Verona integron

Hosts: Vincent RacanielloMichael Schmidt, ... Read More

BacterioFiles 232 - Exploring Enzymes' Element Effects

This episode: Bacteria can convert soluble uranium to an insoluble form, and distinguish between different isotopes!


(8.2 MB, 8.9 minutes)


Show notes: 
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MWV94 - TWiM #99: Careers in Biodefense

Hosts: Vincent Racaniello


Guests: Maria Julia Marinissen, Read More

BacterioFiles 220 - Coliforms Cooperate by Conduit

This episode: Bacteria can connect to each other with tiny tubes to exchange nutrients!


(10 MB, 10.9 minutes)


Show notes: 
News item/ Read More

TWiM #94: Nitrochondria

Hosts: Vincent RacanielloMichael Schmidt, ... Read More

TWiP 93 letters

Sandra writes:


Daniel: I was fascinated by your answer to the case from TWIP 91 - the life cycle of the southeast Asian worm (I won't even try to spell it.) Re early symptom coughing & wheezing: if the ED did a chest X-ray out of concern about the lungs, would the... Read More

TWiM #105: Real bugs with legs

Hosts: Vincent RacanielloMichael Schmidt, ... Read More

Cyanine dyes - Non-sulfonated and Sulfonated cyanines Lumiprobe explains

Sulfonated and non-sulfonated cyanines exhibit very similar fluorescent properties. Non-sulfonated cyanines must be dissolved in organic co-solvent (DMF or DMSO) prior to use, and added to a solution of target molecule in aqueous buffers. Recommended volume of co-solvent should be 10% for Cy3, C... Read More

MWV 99 - Microbial Monsters: #algae #vampirococcus #halloween

Watch the pilot episode of BioFilms in which we explore some creepy microbes just in time for Halloween. Learn how algae can suffocate a pond of all its life, discover the vampire bacterium known as Vampirococcus who literally sucks the life out its victims, and watch out for those sweet Hall... Read More

Striking photo shows all the bacteria on an 8-year-old's hand (Today.com)

Behold some of the bacteria that grew when an 8-year-old boy who had been playing outside pressed his hand onto a large Petri dish. The photo has been getting lots of buzz after his mom posted it on MicrobeWorld last week.

Tasha Sturm, who works as a microbiology lab tech at Cabrillo College ... Read More

More than bread and beer: The National Collection of Yeast Cultures (video)

Do you eat bread? Or drink beer? If so you've probably consumed yeast products from the National Collection of Yeast Cultures.

Yeasts are one of the earliest, if not the earliest, biological tools used by people. Brewers' yeast, Saccharomyces cerivisae, features widely in products we consume... Read More

BacterioFiles 222 - Cells Store Solar Sparks

This episode: Bacteria engineered to produce liquid fuel can eat carbon dioxide and hydrogen from solar-powered water-splitting!


(11.2 MB, 12.25 minutes)


Show notes: 
Read More

Acid Fast Stain#2

Acid Fast stain done on a mix of Staphylococcus aureus and Mycobacterium smegmatis. The stain was done on a culture of M. smegmatis that was incubated on a TSA slant with 1ml TSB added at 37 degree's C for 4 days, S. aureus was incubated in TSB at 37 degree's C for 24 hrs. Several loops of eac... Read More

BacterioFiles 158 - Partners Provide Protein

This episode: Different bacteria working together can thrive better than when working alone!


(9.9 MB, 10.75 minutes)


Show notes: 
News item/ Read More

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