How the retina "sees.".
D000818:Animals; D003624:Darkness; D000882:Haplorhini; D006801:Humans; D008027:Light; D018377:Neurotransmitter Agents / Q000378:metabolism; D010786:Photoreceptor Cells / Q000502:physiology; D012160:Retina / Q000166:cytology / Q000378:metabolism / Q000502:physiology* / Q000648:ultrastructure
D018377:Neurotransmitter Agents