Organisms grown in Fluid Thioglycollate Media w/out resazurin dye is a reducing media that uses sodium thioglycollate to chemically combine with dissolved oxygen to deplete the oxygen in the media. All organism except for Neisseria sicca were grown for 48 hours at 37 degrees C. Neisseria sicca i... Read More
Serratia marcescens can form brilliant red colonies on LB agar due to the synthesis of the secondary metabolite prodigiosin. In the Microbiology teaching lab, we had students create pigment mutants of S. marcescens and these lovely shades of pink and white were collected for analysis. Read More
This episode: Marine worms and their microbial symbionts can live on the toxic gas carbon monoxide!
Reminder: this is the last episode for at least a few weeks while I am wrapping up my PhD. See you again when I'm done!
(11.1 MB, 12.1 minutes)
This episode: Cancer-killing viruses could work even better when loaded into stem cells!
(8.3 MB, 9 minutes)
This episode: A protein from gut bacteria has been tentatively linked with a human protein related to eating disorders!
(11.4 MB, 12.4 minutes)
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
This episode: Vampirovibrio chlorellavorus, a predatory bacterium that feeds on Chlorella algae, is currently lost from science, but its genome has been sequenced and interpreted anyway, to reveal a surprising family history!
(9.4 MB, 10.25 minutes)
Host: Vincent Racaniello
Vincent visits the laboratories of Kit and J... Read More
This episode: Colonizing ourselves with friendly bacteria could drive out more risky ones, such as those that cause meningitis!
(9.8 MB, 10.6 minutes)
This episode: Of genes that are similar in yeast and humans, almost half of the yeast versions are functional when replaced with the human version!
(7.9 MB, 8.5 minutes)
This episode: Gut bacteria kill their drug-resistant pathogenic cousins of the same species via pheromone signaling!
Just to let you know, I'm trying to finish up my dissertation and graduate in the next few months, so after episode 240, I will be putting the show on hold, at least for... Read More
"Two types of bacteria found in the soil have enabled scientists to get the dirt on how resistance to antibiotics develops along with a separate survival strategy.The study identifies an atypical antibiotic molecule and the way in which the resistance to that molecule arises, including the ident... Read More
Fr... Read More
This episode: Discovering how butterflies' bacteria change from caterpillar to adult!
(7.5 MB, 8.1 minutes)
Hosts: Vincent Racaniello, Michele Swanson, and Michael Schmidt.
Vincent, Michele, and Michael reveal the discovery of a new species of the spirochaete that causes Lyme disease, and fecal microRNAs that shape the gut microbiome. Read More
This episode: Scientists engineered E. coli to seek and destroy pathogens!
(10 MB, 11 minutes)
A bacterium can sense pathogens in the body, swim toward them, and release a deadly biofilm-busting payload. This process is called pseudotaxis, and could be modified for many... Read More
Matt updates the TWiV team on MERS-coronavirus, and joins in a discussion of whether we should further regulate research on potentially pandemic pathogens.
This episode: Bacteria use fungal filaments like highways to swim through soil!
(7.7 MB, 8.3 minutes)