RESUMEN
Experimental infection of puppies with Heterophyes heterophyes was associated with marked cell-mediated immune response that manifested itself by increase of T-cell count and leucocyte migration. The degree of cell-mediated immune response was inversely proportional to the intensity of infection. The significance of the results was discussed.
Asunto(s)
Linfocitos T/inmunología , Infecciones por Trematodos/inmunología , Animales , Inhibición de Migración Celular , Perros , Heterophyidae , Inmunidad Celular , Activación de Linfocitos , Formación de RosetaRESUMEN
Studies were conducted into effects of Rift Valley fever virus on oestrous and vaginal cytology in non-pregnant ewes. 6 pregnant and 8 non-pregnant local Barki ewes were subcutaneously inoculated with different doses of virus isolated from Sharkia Province. Observed were irregularities in the oestrous cycle (20-28 days inoculation) and anoestrum. The anoestrum smears included large non-cornified epithelial cells with large well stains centrally located nuclei together with a large number of bacteria. Abortion and retention of placenta occurred in pregnant ewes with prolonged puerperal heat up to 70 days. Inoculation of virus was followed by thermal response. Re-isolation of virus in BHK cells was possible from aborted foetuses and placenta.
