title: Response of monkey biorhythms to changing photoperiods.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D001831:Body Temperature / Q000528:radiation effects*; D002940:Circadian Rhythm / Q000528:radiation effects; D003624:Darkness; D000882:Haplorhini / Q000502:physiology* / Q000528:radiation effects; D008027:Light; D008297:Male; D009043:Motor Activity / Q000528:radiation effects*; D011830:Radiation Effects; D013997:Time Factors