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Abstract Häggendal, J. and T. Malmfors. Identification and cellular localization of the catecholamines in the retina and the choroid of the rabbit. Acta physiol. scand. 1965. 64. 58–66. – By means of fluorescence microscopical and chemical methods the catecholamines of retinas and choroids were examined in rabbits normally, after treatment with drugs interfering with catecholamine storage, and after bilateral cervical sympathectomy. Dopamine was found to be the dominating catecholamine in the retina, 0.1–0.2 μg per g. It was localized to particular neurons. The results support the view that dopamine serves as the transmittor of these neurons. Noradrenaline was found in the choroid, 0.2–0.3 μg per g. It was localized to adrenergic vascular nerves.
Häggendal et al. (1965) studied this question.