Neurosecretory activity in rats under conditions of continuous light or darkness.
D000818:Animals; D003624:Darkness; D007031:Hypothalamus / Q000502:physiology*; D008027:Light; D010902:Pituitary Gland; D010904:Pituitary Gland, Posterior / Q000502:physiology*; D051381:Rats
DARKNESS/effects; HYPOTHALAMUS/physiology; LIGHT/effects; PITUITARY GLAND, POSTERIOR/physiology