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. 2024 Feb 27;25(5):2732. doi: 10.3390/ijms25052732

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© 2024 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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NGF/TrkA immunostaining in N. guentheri retina. (a) NGF-immunoreactivity in the inner segment (white-arrows) and outer segment (asterisk) of the photoreceptors layer; in the OPL (yellow arrows); in a subpopulation of ACs (gallon-arrows); in the BCs (blue arrows); in the soma of GCs (stars). (b) TrkA-immunoreactivity in the cytoplasmic prolongations of the RPE (arrowheads); in the inner segment of PRL (white-arrows); in the OPL (yellow-arrows); in different subpopulation of ACs (gallon-arrows and red-arrows); in the soma of GCs (stars) poorly stained. (c) Colocalization view of NGF and TrkA in the inner segment of PRL (white-arrows) and in a subpopulation of ACs (gallon-arrows). Some ACs and GCs TrkA immunopositive did not show double staining with NGF. A similar condition was observed for the OPL: NGF and TrkA immunostained but non-overlapping. Magnification 40×. Scale bar 20 µm.