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Science 14 May 1982:
Vol. 216. no. 4547, pp. 747 - 749
DOI: 10.1126/science.7079736
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Articles

Science, Vol 216, Issue 4547, 747-749
Copyright © 1982 by American Association for the Advancement of Science

articles

New dopaminergic and indoleamine-accumulating cells in the growth zone of goldfish retinas after neurotoxic destruction

K Negishi, T Teranishi, and S Kato

Juvenile goldfish were allowed to grow for 3 months after dopaminergic or indoleamine-accumulating cells in their retinas had been destroyed by intravitreal injection of 6-hydroxydopamine or 5,7-dihydroxytryptamine, respectively. New cells of each type were found growing in concentric rings at the margin of the retina. To compensate for the loss of dopaminergic innervation in retinas treated with 6-hydroxydopamine, cells in the growth zone appeared to proliferate at a higher rate than those in untreated retinas and long processes were extended into the retina by the first dopaminergic cells to appear.


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