Resumo Camundongos foram infectados com cercárias, de um único sexo, de cepas simpátricas do Schistosoma mansoni. Nos vermes adultos, foram encontradas diferenças significativas (p<0,05) nas ventosas, lobos testiculares, ovário e espessura do tegumento. O experimento demonstra que a morfometria de vermes isolados de infecção unissexual também é uma ferramenta na identificação de cepas do Schistosoma mansoni. Palavras-chaves: Schistosoma mansoni. Cepas. Infecção unissexual. Estudo morfométrico.Abstract Mice were infected with only one sex cercaria derived from sympatric strains of Schistosoma mansoni. Adult worms presented significative differences (p<0.05) regarding suckers, testicular lobes, ovary and thickness of the tegument. Data show that morphometric study of unisexual infection worms can be also used for characterization of Schistosoma mansoni strains.
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