these results show that ( 1 ) significant impairment of spermatogenesis exists before therapy , precluding the possibility of sperm banking in most patients , ( 2 ) combination chemotherapy in testicular cancer has substantial effects on gonadal function , rendering almost all patients azoospermic , and ( 3 ) a high degree of recovery of spermatogenesis occurs sometime after 2-3 yr from the initiation of treatment .
C0037868
sperm
C0037864
spermatogenesis