The protection of mice against a virulent strain of Trypanosoma cruzi by previous inoculation with an avirulent strain.
D000818:Animals; D000917:Antibody Formation; D003168:Complement Fixation Tests; D007274:Injections, Intraperitoneal; D051379:Mice; D014345:Trypanosoma / Q000472:pathogenicity*; D014352:Trypanosomiasis / Q000517:prevention & control*; D014611:Vaccination; D014774:Virulence