Krettli, A U Protective effects of specific antibodies in Trypanosoma cruzi infections. [electronic resource] - Journal of immunology (Baltimore, Md. : 1950) Mar 1976 - 755-60 p. digital Publication Type: Journal Article ISSN: 0022-1767 Subjects--Topical Terms: AnimalsAntibody SpecificityChagas Disease--immunologyHumansImmunityImmunization, PassiveMiceTime FactorsTrypanosoma cruzi--cytology