TY - JOUR AU - Allen, W R; Moor, R M TI - The origin of the equine endometrial cups. I. Production of PMSG by fetal trophoblast cells JO - J Reprod Fertil VL - 29 PY - 1972 DO - 10.1530/jrf.0.0290313 L3 - PubMed-ID: 5023705 SP - 313 EP - 316 ER -