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. 2013 Feb 28;10(3):830–844. doi: 10.3390/ijerph10030830

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© 2013 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 license (http://creativecommons.org/licenses/by/3.0/).

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(A) Section of the seminiferous tubules of control rat showing normal spermatogenesis with normal features of spermatogonia (Sg), spermatocytes (Sp), spermatids (Sd), elongated spermatids (ES) and interstitial cells (IC) × 1,000. (B) Spermatogonia (Sg) rest upon the basal lamina (BL). Both spermatogonia (Sg) and spermatocytes (Sp) appear normal. Mitochondria (M) of germ cells exhibited in abundance with sign of degenerations 8,000×.