Affiliation: | (1) Post-Graduate Program in Parasitology, Universidade Federal de Pelotas (UFPEL); Campus Universitário, Caixa Postal 354, 96010-900 Pelotas, RS, Brazil. Tel.: 55.53.3275-7350, Fax: 55.53.3275-7350.;(2) Center of Technology Development - Biotechnology (UFPEL). ;(3) Parasitology Laboratory, Universidade Federal do Rio Grande (FURG). ;(4) Post-Graduate Program in Health Sciences (FURG). |