title: The production of chorionic somatomammotrophin in sheep.
abstract: The production of ovine chorionic somatomammotrophin (OCS) was demonstrated in the trophoblast from Days 16-17 of pregnancy. Concentrations in the placenta rose slowly until about Day 100 when there was a rapid increase to reach 70 +/- 5 microng prolactin equivalent/g fresh placental tissue and 15 +/- 2 mg/placenta on Day 120. After Day 140, the concentrations decreased. It is suggested that OCS may be luteotrophic and have an effect on fetal growth.
mesh_terms: D000818:Animals; D005260:Female; D005865:Gestational Age; D008098:Litter Size; D009929:Organ Size; D010920:Placenta / Q000378:metabolism; D010928:Placental Lactogen / Q000032:analysis / Q000096:biosynthesis*; D011247:Pregnancy; D012756:Sheep / Q000378:metabolism*; D014327:Trophoblasts / Q000378:metabolism
chemical_list: D010928:Placental Lactogen