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. 2020 Feb 4;21:9. doi: 10.1186/s40360-020-0387-6

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© The Author(s). 2020

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Photomicrographs of rat retinas with H-E staining: (a) Normal

group: retinal cells displayed normal shapes and orderly arrangements in every layer.

of the retinal tissues; (b) Normal +Cs-A group: no obvious abnormalities were.

observed compared to the normal group; (c) DM group: there were edema and.

thickening of ganglion cell layer, inner plexiform layer and outer nuclear layer, besides disordered alignments of inner nuclear layer; (d) DM + Cs-A group: there were approximately regular arrangements of retinal cells and slightly thickened retina tissues. Original magnification was 400X.