31. Several days later, chorionic villi in the forming placenta anchor the implantation site to the uterus. 32. A low dose of human chorionic gonadotropin ( HCG ) may be injected after completed ovarian stimulation. 33. The second is a test for human chorionic gonadotropin ( hCG ), a hormone that placentas produce. 34. One of the strangest weight loss crazes was human chorionic gonadotropin, a hormone produced by pregnant women. 35. These structures, called the chorionic villi, carry the fetal blood supply often sampled in prenatal tests. 36. Older women often have amniocentesis or chorionic villus sampling _ invasive tests that give much more definitive answers. 37. Mammalian embryos develop two cavities : the intraembryonic coelom and the extraembryonic coelom ( or chorionic cavity ). 38. Ninety-five percent of marmoset fraternal twins trade blood through chorionic fusions, making them hematopoietic chimeras. 39. The chorionic villi create a large surface to maximize the exchange that takes place between the two blood supplies. 40. HCG stands for Chorionic Gonadotrophin and is listed under the same class of prohibited substances as human growth hormone.
