The penetration of the peritrophic membrane of the tsetse flies by trypanosomes.
D000818:Animals; D002417:Cattle; D004463:Ecology; D005247:Feeding Behavior; D006168:Guinea Pigs; D051379:Mice; D051381:Rats; D014345:Trypanosoma / Q000502:physiology; D014346:Trypanosoma brucei brucei / Q000502:physiology; D014370:Tsetse Flies / Q000502:physiology