Fig. 2
From: Immature rat testis sustained long-term development using an integrative model
A: H&E staining, immunohistochemical staining of 8-OH-dG and TUNEL assay of rat testis in the control and new integrative model groups. B: The results showed that there were more apoptotic cells (↑) after culture than that before culture and more apoptotic cells in the new model group than that in the control group. C: Ultrastructural study of rat testis in the control group. D: Ultrastructural study of rat testis in the new integrative model group. (1: spermatogonium; 2: primary spermatocyte; 3: secondary spermatocyte; 4: spermatid; 5: Sertoli cell; 6: myoid cell; 7: Leydig cell; Black filled triangle: Leydig cell; white filled triangle: Sertoli cell; white filled arrow: myoid cell; ↑: elongating spermatid; black filled arrow: spermatocyte; N: nuclei; M: mitochondria; *Significant difference at P < 0.05; ns no significant difference; A: scale bars indicate 50 µm; C, D: scale bars indicate 2 µm.)