Serum response in C57BL/6J, balb/C swiss mice immunized with irradiated tachyzoites of toxoplasma gondii RH strain and oral challenge with ME-49 strain - Galisteo Junior, A. J; Zorgi, N. E; Baptista, J. A; Hiramoto, R. M; Nascimento, N. do; Andrade Júnior, Heitor Franco de (Annual meeting of the brazilian society of protozoology, 2006)