Blood progesterone concentrations in pregnant and non-pregnant mares.
D000818:Animals; D004971:Estrus; D005260:Female; D006736:Horses / Q000502:physiology*; D010060:Ovulation; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*; D013997:Time Factors
D011374:Progesterone