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Revista Paraense de Medicina

Print version ISSN 0101-5907


SANTOS, Marco Antonio Vasconcelos  and  RODRIGUES, Isabel R. de Carvalho. In vitro study of the letal action of Biomphalaria glabrata hemolimph over the Schistosoma mansoni miracidia. Rev. Para. Med. [online]. 2006, vol.20, n.2, pp.13-16. ISSN 0101-5907.

OBJECTIVE: to in vitro, show the lethal capability of hemolimph of the B.glabrata snail over the miracidia of S. mansoni. METHODO: the miracidia of S. mansoni were individually put in contact with a drop of hemolimph on a slide and observed through an entomologic microscope. Then, it was tried to determine the survival time of these miracidia, calculating its mobility from beginning to end, after being put in contact with the drop. RESULTS: the results showed that from the 100 individual tests made, there was 100% miracidia death. CONCLUSION: this makes us conclude that, even when the B.glabrata snail shows it self sensible to natural or in laboratory conditions infection, the hemolimph of this innkeeper represents a great defense factor against the S. mansoni larvae invasion.

Keywords : Biomphalaria glabrata; hemolimph; miracidia; hemocytes.

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