Table 1. Serum testosterone (T), FSH and LH levels and testicular T content in untreated normal rats or immunized with TH and adjuvants (E) and injected with saline or L-NAME.

Group	Se rum T (ng/ml)	Intratesticular T (ng/gr testis weight)	Se rum LH (ng/ml)	Se rum FSH (ng/ml)
Normal	1.300±0.490	4.085±1.723	0.817±0.175	5.964±0.561
E+saline	1.068±0.199	11.717±2.340*	0.512±0.071	4.522±0.454
E+L-NAME	0.872±0.120	4.517±1.083 ΔΔ	0.442±0.105	4.624±0.561

Hormone levels were measured by RIA in sera and testes from untreated normal rats (n = 9) or rats immunized with TH and adjuvants and injected with saline (E+saline, n = 11) or L-NAME (E+L-NAME, n = 12). Data are expressed as mean±SEM.

*p<0.01 versus respective normal and

^ΔΔ p<0.05 vs. E+saline.

Dunn Multiple Comparison Test.