PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 29605312-1 2018 The aim of this study was to examine the effect of a single administration of human chorionic gonadotrophin (hCG) during the establishment of the corpus luteum (CL) on progesterone (P4) concentration and pregnancy per artificial insemination (P/AI) in lactating dairy cows. Progesterone 168-180 chorionic gonadotropin subunit beta 5 Homo sapiens 84-113