A biphasic action of estradiol on estrogen and progesterone receptor expression in the lamb uterus Ana Meikle, Mats Forsberg, Lena Sahlin, Britt Masironi, Celia Tasende, Marcelo Rodríguez-Piñón and Elsa G. Garófalo Reprod. Nutr. Dev., 40 3 (2000) 283-293 DOI: 10.1051/rnd:2000132