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. 2016 Feb 11;6:20758. doi: 10.1038/srep20758

Figure 1. The histological observation of testes in the Duroc and Meishan boars at different ages.

Figure 1

(a) Testis of 20-day-old Duroc boar. (b) Testis of 20-day-old Meishan boar. (c) Testis of 75-day-old Duroc boar. (d) Testis of 75-day-old Meishan boar. (e) Testis of 270-day-old Duroc boar. (f) Testis of 270-day-old Meishan boar. Bars = 20 μm. The blue parts represent the nucleus, stained by Hematoxylin Staining Solution, and the red parts represent the cytoplasm, stained by Eosin Staining Solution. SfT, seminiferous tubule; SC, Sertoli cell; IC, interstitial cell; Sg, spermatogonia; PS, primary spermatocyte; SS, secondary spermatocyte; ST, spermatid; Sz, sperm.