Fig. 4From: Spermatogenic differentiation of spermatogonial stem cells on three-dimensional silk nanofiber scaffoldComparison of specific spermatogonia gene expression, in seeded SSCs on Silk scaffolds. Ratio gene expression of DAZL, VASA, and Piwil2 in SSCs grown on scaffolds compared to control. Data are shown as mean±SEM from three independent experiments. a: significant increase with the control groupBack to article page