keywords 2-IODOMELATONIN BINDING-SITES AUTORADIOGRAPHIC LOCALIZATION Agriculture Agriculture, Dairy & Animal Science CHICKEN GALLUS-DOMESTICUS CYCLIC-AMP DIURNAL-VARIATION GUANOSINE 5'-O-(3-THIOTRIPHOSPHATE) JAPANESE-QUAIL Life Sciences & Biomedicine N-ACETYLTRANSFERASE ACTIVITY PINEAL-GLAND RETINAL-PIGMENT EPITHELIUM Science & Technology