Table 2. NaHS reduced PDE activity in aortic rings (n = 8, mean ± SEM).

NaHS (μmol/L)	5′- GMP (μmol/L)	P
Basal (0)	0.45 ± 0.08
3	0.31 ± 0.09	0.27
50	0.15 ± 0.04 **	0.01
300	0.21 ± 0.06*	0.03

*P < 0.05, **P < 0.01, compared with the basal group, n = 8