active immunization against gnrh reduced serum concentrations of testosterone ( p < 0.05 ) and luteinizing hormone ( lh ) ( p < 0.05 ) , testes volume ( p < 0.01 ) , paired testis weights ( p < 0.05 ) , paired epididymis weights ( p < 0.05 ) , sperm per testis ( p < 0.01 ) and seminiferous tubule diameters ( p < 0.001 ) when compared with controls ( n=4 ) .
C0037868
sperm
C0036630
seminiferous tubule