Bioassay of oestrogen and recurring oestrus in ovariectomized ewes.
D000818:Animals; D001681:Biological Assay; D003271:Contraceptive Agents, Female; D004967:Estrogens; D004971:Estrus; D005260:Female; D006801:Humans; D012756:Sheep
D003271:Contraceptive Agents, Female; D004967:Estrogens
ESTROGENS; ESTRUS