Biological characterization of Toxoplasma gondii isolates from free-ranging chickens from the Northeast region of Brazil - Gennari, Solange Maria; Oliveira, L. N; Costa Júnior, L. M; Melo, C. B; Silva, J. C; Bevilaqua, C. M; Azevedo, Sérgio Santos de; Oliveira, Edimar Mesquita de; Melo, A. C; Araújo, D. A; Muradian, Vanessa (Annual Meeting of the American Society of Parasitologists, 2008)