title: Infectivity of Trypanosoma cruzi metacyclic trypomastigotes from cultures kept in laboratory for different periods of time.
mesh_terms: D000818:Animals; D003470:Culture Media; D051379:Mice; D013997:Time Factors; D014349:Trypanosoma cruzi / Q000254:growth & development / Q000472:pathogenicity*
chemical_list: D003470:Culture Media