of 28 contralateral scrotal testes in patients with unilateral cryptorchidism 4 ( 14.3 per cent ) had no spermatogonia per seminiferous tubule and 8 ( 28.0 per cent ) had a decreased number of spermatogonia per seminiferous tubule .
C0037866
spermatogonia
C0036630
seminiferous tubule