01852naa a2200361 a 450000100080000000500110000800800410001902400540006010000190011424501240013326000090025752008290026665000160109565000200111165000100113165000160114165000190115765000100117665000170118665300210120365300220122465300180124665300250126465300150128965300170130465300170132165300140133865300100135270000180136270000190138070000180139977300730141715222912023-12-04       1987    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/0020-7519(87)90163-92DOI1 aGREGORY, M. W.  aOvine coccidiosisbobservations on "oocyst patches" and polyps in naturally-acquired infections.h[electronic resource]  c1987  aAbstract: Three types of lesion were identified and examined by light microscopy and by transmission and scanning electron microscopy: flat oocyst patches, raised oocysts patches and polyps. They all contained heavy concentrations of gamonts and oocysts of Eimeria bakuensis (syn. E. ovina). Small meronts were also present in small numbers. Cryptosporidium, where present, appeared to favour the intestinal wall rather than the polyp. The bases of polyps were saturated with small undifferentiated parasites, most of which were binucleate. Polyps appear to arise from oocyst patches as a result of the parasite's stimulating host cell replication and synchronizing its own division with that of the host cells. Resolution of the lesion appears to be brought about by macrophages destroying infected cells in the polyp base.  aCoccidiosis  aCryptosporidium  aLambs  aMacrophages  aSheep diseases  aOvino  aProtozoário  aEimeria arloingi  aEimeria bakuensis  aEimeria ovina  aIntestinal pathology  aMacrophage  aOocyst patch  aParastologia  aPatologia  aPolyp1 aCATCHPOLE, J.1 aPITTILO, R. M.1 aNORTON, O. C.  tInternational Journal Parasitologygv. 17, n. 6, p. 1113-1124, 1987.