Steroids and color change during gravidity in the lizard Crotaphytus collaris.
D000818:Animals; D002369:Castration; D005260:Female; D008116:Lizards / Q000502:physiology*; D010858:Pigmentation / Q000187:drug effects*; D011247:Pregnancy; D011270:Pregnancy, Animal; D011336:Probability; D011374:Progesterone / Q000494:pharmacology*; D013268:Stimulation, Chemical; D013739:Testosterone / Q000494:pharmacology*
D013739:Testosterone; D011374:Progesterone