Genital organ disorders are important cause of infertility and sterilitiy. Many studies were performed on these disorders in many countries in the world [1, 2, 6, 13, 14, 19, 20, 21, 23]. In some studies about investigations of reproductive tract disorders in cows, atrophic and hypoplastic ovary, follicular cyst, luteal cyst, cystic corpora lutea, oophoritis and ovarian neoplasms have been repo...

T HE past decade has witnessed a revival of interest in the mammalian corpus luteum. The availability of new techniques is in part responsible but a more important factor has been the increasing use of cows, sheep, pigs and even women as experimental species. The use of these mammals has uncovered, to a much greater degree than was expected, a diversity in the physiology of the corpus luteum, a...

Tissue distribution and cellular localization of PC1/3 mRNA in porcine tissues were examined by ribonuclease protection assay and in situ hybridization. PC1/3 mRNA was detected mainly in the corpus luteum of pregnant sow and brain. Within the ovary, PC1/3 and relaxin transcripts colocalized within large luteal cells. Levels of PC1/3 transcripts in corpora lutea increased as gestation advanced, ...

Electrical stimulation of the anterior hypothalamus of the vole, Microtus agrestis, usually results in ovulation, whereas stimulation of areas in the posterior hypothalamus do not. Ovulation can also be elicited by injections of sheep median-eminence extracts, and by preparations ofsheep luteinizing hormone. Observations on the number of corpora lutea formed, and ripe Graafian follicles remaini...