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. 1982 Apr;79(7):2398–2400. doi: 10.1073/pnas.79.7.2398

Immunocytochemical localization of enkephalin-like immunoreactivity in the retina of the guinea pig.

R A Altschuler, J L Mosinger, D W Hoffman, M H Parakkal
PMCID: PMC346201  PMID: 7048319

Abstract

The distribution of enkephalin-like immunoreactivity in the retina of the guinea pig was studied. Indirect immunofluorescence techniques were used on retinae with and without colchicine pretreatment. In retinae not receiving colchicine pretreatment, enkephalin-like immunoreactivity was seen in fibers in the inner plexiform layer, predominantly in laminae 1, 3, and 5. In colchicine-pretreated retinae, enkephalin immunofluorescent cell bodies were seen in the inner margin of the inner nuclear layer in addition to the immunoreactive fibers. These cells showed morphological characteristics of amacrine cells. No enkephalin-like immunofluorescence was seen in the optic nerve, ganglion cell layer, or outer nuclear or plexiform layers. These findings of enkephalin-like immunoreactive cells and fibers in a mammalian retina add to the findings in nonmammalian retinae and suggest that the enkephalins play a role in primary sensory systems of mammalian and nonmammalian species.

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Selected References

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