title: Nature of the C/D-ring union in the oestrogenic hormones.
mesh_terms: D003271:Contraceptive Agents, Female; D004967:Estrogens; D005260:Female; D006801:Humans; D019736:Prostheses and Implants
chemical_list: D003271:Contraceptive Agents, Female; D004967:Estrogens
keywords: ESTROGENS