Fig. 4
From: Organ culture of seminiferous tubules using a modified soft agar culture system
a Histological appearance of frozen longitudinal section of seminiferous tubules after 40 days of culture at different magnifications. Arrows indicate morphologically mature spermatozoa. Scale bars = 100 μm. b Comparison of expression of spermatogenesis genes in colonies and seminiferous tubules (STs) by real-time PCR. Data are expressed as means ± SD. *p < 0.05