Animal Chick Embryo Corticosterone Progesterone nonhuman progesterone 18-Hydroxycorticosterone Chemistry Estradiol Female Ovary Pregnanediones Steroids Support, Non-U.S. Gov't adrenal gland chicken corticosterone embryo estradiol metabolism ovary pregnanedione 18 hydroxycorticosterone derivative 3(or 17)beta hydroxysteroid dehydrogenase Acid-Base Equilibrium Adrenal Cortex Adrenal Glands Aldosterone Aminolevulinic Acid Butanols