1. Program of Graduate Studies on Applied and Basic Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
2. School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil.
3. Department of Genetics, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
4. Department of Clinical Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
5. Department of Biology, Federal University of Viçosa, Viçosa, MG, Brazil.