Figure 6From: Effect of exogenous nitric oxide on sperm motility in vitroThe experimental group’s NO concentration and time change curve detected after adding SNP and L-NMMA. T1, T2, and D as in Figure 1. SNP and L-NMMA were used to manipulate NO concentration in the experimental group, and, as seen in Figure 6, the experimental group’s NO concentration and time change curve is very similar to that of the normal semen group.Back to article page