title: Observations on Trypanosoma cruzi strains maintained over an 8-year period in experimentally inoculated mice.
mesh_terms: D000818:Animals; D004199:Disease Vectors; D051379:Mice; D013997:Time Factors; D014225:Triatominae; D014349:Trypanosoma cruzi / Q000254:growth & development / Q000502:physiology*