Biogenic amines in cephalopod retina.
Biochemical and ultrastructural studies by previous workers have suggested dopamine as a candidate neurotransmitter for the centrifugal neurons present in the cephalopod retina. We have examined the retina in 3 species of cephalopod mollusc and find strong green bands of glyoxylic acid-induced fluorescence in the synaptic plexus region. These results, together with data obtained from our Golgi impregnations, help to confirm previous speculations that the centrifugal neurons are dopaminergic.
D000818:Animals; D004298:Dopamine / Q000502:physiology*; D008856:Microscopy, Fluorescence; D008974:Mollusca / Q000502:physiology*; D018377:Neurotransmitter Agents; D049831:Octopodiformes / Q000502:physiology; D012160:Retina / Q000502:physiology*; D013045:Species Specificity; D009435:Synaptic Transmission
D018377:Neurotransmitter Agents; D004298:Dopamine