1. Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, BA, Brazil.
2. Department of Chemistry and Biochemistry, Border Biomedical Research Center, The University of Texas at El Paso, El Paso, Texas, U.S.A.
3. Department of Biological Sciences, Border Biomedical Research Center, The University of Texas at El Paso, El Paso, Texas, U.S.A.
4. Instituto Nacional de Ciência e Tecnologia de Doenças Tropicais, Salvador, BA, Brazil.
5. Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil