Figure 7.

Immunohistochemistry with AGO2 and AGO3 using the immunoperoxidase method and hematoxylin counterstain from yak testis during postnatal development. (A, B, C and D) Expression of AGO2. (E, F, G and H) Expression of AGO3. (I, J, K and L) Negative control. (A, E and I) age <2 years; (B, F and J) 2 < age < 4 years; (C, G and K) 4 < age < 6 years; (D, H and L) 6 < age < 8 years. PS, primary spermatocytes; S, spermatogonia; Sp, spermatids; SS, secondary spermatocytes; Sz, spermatozoa.