endocrine function Animals 12 nonhuman 12 Humans 10 priority journal 10 Female 8 human 8 review 8 Pregnancy 6 gonadotropin release 6 protein function 6 Chorionic Gonadotropin 4 Embryo Implantation 4 Hypothalamus 4 Leptin 4 Mice 4 Ovary 4 Reproduction 4 adenohypophysis 4 article 4 controlled study 4 estrogen 4 female 4 gonadotropin 4 hormonal regulation 4 hormone action 4 hypothalamus 4 infertility 4 interleukin 6 4 leptin 4