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. 2023 Jun 9;11(2):84. doi: 10.3390/diseases11020084

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© 2023 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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Photomicrographs of a rat testis of group II, showing: (a) Irregular outer boundaries (I), fused tubules (F), widely separated seminiferous tubules (IT), and dilated congested blood vessels (arrowheads). H&E, ×200. (b) Loss of outer boundaries of the tubules (arrows). H&E, ×200. (c) The separation between the basal layer and other spermatogenic cells (*), basal germ cells with very dark nuclei (arrows). H&E, ×400. (d) Deeply inserted spermatozoa in between spermatogenic cells (Sz), desquamated spermatogenic cells in the lumen (Sc), fused outer boundaries of two tubules (F). H&E, ×400. (e) Vacuolated spermatogonia (bifid arrows) and vacuolated primary spermatocytes (curved arrows). H&E, ×1000. (f) Vacuolated interstitial tissue (V) containing Leydig cells (L) with perinuclear vacuolation (N) and highly acidophilic cytoplasm (C). H&E, ×1000.