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Updated: Jun 22, 2026

Investigating Retinal Circuits and Molecular Localization by Pre-Embedding Immunoelectron Microscopy
Published on: July 12, 2024
[Distribution of met-enkephalin expression in the visual pathway. Experimental study by inmunocytochemistry]
I Montero-de-Espinosa1, R Márquez-de-Aracena, M Muñoz-Saez
1Servicio de Oftalmología, Hospital Universitario Virgen del Rocío, Sevilla, Spain. eignacio.montero.sspa@juntadeandalucia.es
Purpose:
The localization and distribution of neuropeptide expression in the cat visual pathway can provide information about the function of that pathway.
Method:
Study of optic pathway in eight cats. Following extraction of the brain, slices were prepared using a microkeratome. The slices were examined by indirect immunocytochemistry using anti-metenkephalin as antibody to determine the presence or absence of this pentapeptide in the visual pathway.
Results:
Met-enkephalin receptors in both cortical and subcortical regions of the brain were detected. This suggests that met-enkephalin could be involved in the visual mechanism.
Conclusions:
The presence of met-enkephalin receptors in both cortical and subcortical regions of the brain suggests that this pentapeptide could be involved in the visual mechanism.
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