The Podfessors solve the case of the Teenager With Swollen Scrotum, and continue the story arc of Daniel’s favorite cells, B-1 cells, and their association with protective immune responses in human Chagas disease.

The TWiP team solve the case of the Four Year Old with Fever, Headache, and Cough, and discuss the release of extracellular vesicles from Leishmania amazonensis that manipulate the host immune response.

The TWiP legends solve the case of Surfer Sans Septum, and discuss how two symbiotic bacteria in the tsetse fly might allow colonization with Trypanosoma brucei.