Table 3 Effect of subchronic low-dose exposure to NP on the absolute and relative weights of reproductive organs in F1 male mice

	CON	NP-50
Testis (mg, pair)	98.55±1.97	104.6±1.88*
Testis (mg, pair)/body weight (g)	3.26±0.14	3.61±0.08
Epididymis (mg)	44.40±0.80	37.64±1.02***
Epididymis/body weight (g)	1.46±0.07	1.43±0.09
Seminal vesicle (mg)	58.97±2.15	53.25±1.38*
Seminal vesicle/body weight (g)	1.87±0.10	1.84±0.05
Prostate (mg)	8.10±0.48	6.62±0.4*
Prostate (mg)/body weight (g)	0.25±0.02	0.23±0.01

p<0.05;
p<0.001, significantly different from the control group value by t-test.