The TWiM team reviews Salmonella colonization of three-dimensional miniature intestinal organs, and identification of a circadian clock in a non-photosynthetic prokaryote. Become a patron of TWiM. Links for this episode: Salmonella colonization of enteroids (mBio) Circadian clock in nonphotosynthetic prokaryote (Science) Image credit Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Send your microbiology questions and comments to twim@microbe.tv