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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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Electron micrographs of a rat of subgroup IIIa, showing: (a) A Sertoli cell with electron-dense bodies (E) and vacuoles (V). Mic. Mag. 2000×. (b) Type A spermatogonium, myoid cells (My), dilated perinuclear space (arrow), and cytoplasmic vacuole (V). Mic. Mag. 2000×. (c) Primary spermatocyte, nucleus (N), mitochondria (M), electron-dense bodies (E), and vacuoles (V). Mic. Mag. 2000×. (d) Round spermatid, normal acrosomal cap (arrow), Golgi apparatus (arrowhead), nucleus (N), focal discontinuous nuclear membrane (curved arrow), normal mitochondria (M), swollen mitochondria (m), and dilated RER (R). Mic. Mag. 3000×. (e) Middle pieces (MP) and principal pieces (PP) with excess residual cytoplasm (*). Mic. Mag. 6000×.