Therapeutic Effect of Stem Cells on Male Infertility in a Rat Model: Histological, Molecular, Biochemical, and Functional Study

Figure 7

Electron micrographs of a seminiferous tubule of the ADMSC-treated group. (a) Regular basement membrane (BM) with normal myoid cells (MC). Normal space between two seminiferous tubules (double head arrow). Normal type A spermatogonia (A), primary spermatocyte (PS), and Sertoli cell (SC). (b) Early spermatid (ES) with an acrosomal cap (arrow), lipid droplets (arrowhead), and mitochondria around a growing axoneme (double arrow). Few vacuolations in between the cells (V). (c) The lumen of a seminiferous tubule contains different transverse sections of normal sperms and central axoneme with mitochondrial sheath (arrow) and fibrous sheath (arrowhead). (d) Interstitial tissue contains Leydig cells (LC) with euchromatic nuclei (N), mitochondria (M), and blood capillary (C) ((a): TEM, ×1500; (b, d): ×2000; and (c): ×6000).

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