Sequential histological changes in Biomphalaria glabrata during the course of Schistosoma mansoni infection
AUTOR(ES)
Lemos, Queli Teixeira, Andrade, Zilton A
FONTE
Memórias do Instituto Oswaldo Cruz
DATA DE PUBLICAÇÃO
2001-07
RESUMO
Biomphalaria glabrata, highly susceptible to Schistosoma mansoni, were seen to shed less and less cercariae along the time of infection. Histological examination kept a close correlation with this changing pattern of cercarial shedding, turning an initial picture of no-reaction (tolerance) gradually into one of hemocyte proliferation with formation of focal encapsulating lesions around disintegrating sporocysts and cercariae, a change that became disseminated toward the 142nd day post miracidial exposure. Findings were suggestive of a gradual installation of acquired immunity in snails infected with S. mansoni.
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