1. Equine chorionic gonadotropin;Allen,1993
2. The corpus luteum: source of oestrogen during early pregnancy in the mare;Daels;J Reprod Fertil,1991
3. Urinary and plasma estrogen conjugates, estradiol and estrone concentration in nonpregnant and early pregnant mares;Daels;Theriogenology,1991
4. Oestrogens and androgens in blastocoelic fluid and cultures of cells from equine conceptuses of 10–20 days gestation;Flood;J Reprod Fertil,1979
5. Endocrinology of pregnancy;Ginther,1992