1. Laboratory for Toxoplasmosis and other Protozoan Diseases; Oswaldo Cruz Foundation (Fiocruz Rio de Janeiro); Oswaldo Cruz Institute; Rio de Janeiro Brazil
2. Department of Microbiology and Parasitology; Biomedical Institute; Fluminense Federal University; Rio de Janeiro Brazil
3. Primate Center of Rio de Janeiro (CPRJ/INEA); RJ, Rio de Janeiro Brazil