Liver morphology with emphasis on bile ducts changes and survival analysis in mice submitted to multiple schistosoma mansoni infections and chemoterapy - Silva, L. C.; Vianna, M R; Abrantes, C P; Lima, D M C; Falavigna, A L; Cardoso, R H A; Gallucci, S D D; Brito, T (Revista do Instituto de Medicina Tropical de Sao Paulo, 1990)