title: THE ROLE OF THE EYE AND OF THE HYPOTHALAMUS IN THE PHOTOSTIMULATION OF GONADS IN THE DUCK.
mesh_terms: D000818:Animals; D004372:Ducks; D005123:Eye; D006066:Gonads; D006801:Humans; D007031:Hypothalamus; D008027:Light; D008297:Male; D009482:Neurophysiology; D011200:Poultry; D012106:Research; D012160:Retina; D011984:Sensory Receptor Cells; D013737:Testis
keywords: EXPERIMENTAL LAB STUDY; EYE; HYPOTHALAMUS; LIGHT; NEUROPHYSIOLOGY; POULTRY; RECEPTORS, NEURAL; RETINA; TESTIS