| [the use of the shell of the cashew nut, anacardium occidentale, as an alternative molluscacide]. | bioassays using hexanolic extracts of cashew nut shells, of anacardium occidentale, collected in ceará in 1972 (sample 1) and 1987 (sample 2) were undertaken with adult snails and egg masses of biomphalaria glabrata, b. tenagophila and b. straminea both in the laboratory and in the field. non extracted shells, 18.5 g, sample 1, were also tested with adult snails and egg masses of the three species. the toxicity of extract was tested with fish (poecilia reticulata) and tadpoles. the lethal concen ... | 1992 | 1342111 |
| absence of cervical schistosomiasis among women from two areas of north-eastern brazil with endemic schistosoma mansoni. | genital manifestations in schistosomiasis haematobium are common and are associated with considerable morbidity. although schistosoma mansoni may also cause genital disease, the frequency of this complication is not known. cervical biopsies (n=401) and pap smears (n=981) were therefore collected from women living in two s. mansoni-endemic areas (in the states of alagoas and ceará, in north-eastern brazil). the women were screened for the presence of sexually transmitted diseases and for the pres ... | 2006 | 16417713 |