title: Histochemical psychophysics, or, would you believe, psychophysical histochemistry.
mesh_terms: D000818:Animals; D000882:Haplorhini; D006651:Histocytochemistry; D011601:Psychophysics; D051381:Rats; D012160:Retina / Q000502:physiology; D014795:Visual Pathways / Q000502:physiology*