title: The phase relation between a circadian rhythm of the rabbit and different light: dark time ratios.
mesh_terms: D000818:Animals; D000830:Animals, Laboratory; D002940:Circadian Rhythm; D003303:Coprophagia; D003672:Defecation; D006801:Humans; D008029:Lighting; D008297:Male; D011817:Rabbits / Q000502:physiology*