text: actually HCG stands for human chorionic gonadotropin. its a hormone that's produced in humans (mainly women) during ealry pregnancy by the placenta. its detected through a urnine test. theres a LOT more information on it...(in simple form) on this website:\n\nhttp://en.wikipedia.org/wiki/Human_chorionic_gonadotrophin\n\nit think this was the site you were on and youre confused about what you wrote just because thats the structure of HCG so ofcourse that would be confusing! with alll the words in that "structure" section, you can CLICK ON THEM AND THEY TELL YOU WHAT THAT WORD MEANS.