Influence of male gonodal hormones on the parasitemia and humoral response of male calomys callosus infected with the Y strain of trypanosoma cruzi - Prado Júnior, José Clóvis do; Levy, Antonio Marcos de Apparecida; Leal, Mônica de Paula; Bernard, Eurico; Kloetzel, Judith Kardos (Parasitology Research, 1999)