The arrival in the US of plasmid-mediated resistance to colistin antibiotics, a last line of defense against many gram-negative bacilli, and a quorum sensing system in a eukaryote are topics of this episode hosted by Vincent, Michael, and Michele.
Vincent, Michael, Elio and Michele review a new fluorogenic diagnostic test for tuberculosis bacteria, and the role of a metalloprotease in helping a fungus invade the central nervous system.