1 Department of Natural Sciences, University of Pernambuco , Garanhuns , Brazil ; Department of Immunology, Aggeu Magalhães Research Center, Oswaldo Cruz Foundation , Recife , Brazil.
2 Department of Immunology, Aggeu Magalhães Research Center, Oswaldo Cruz Foundation , Recife , Brazil.
3 Department of Microbiology, Aggeu Magalhães Research Center, Oswaldo Cruz Foundation , Recife , Brazil.