Photoperiodic regulation of hamster testis: circadian sensitivity to the effects of light.
D000818:Animals; D002940:Circadian Rhythm; D006224:Cricetinae; D008027:Light; D008124:Locomotion; D008297:Male; D009929:Organ Size; D012669:Seminal Vesicles / Q000502:physiology; D013737:Testis / Q000033:anatomy & histology / Q000502:physiology*