Figure 4.

Effect of acupuncture with different stimuli on uterus mircovessel diameter of female rats at different periods $(\overline{X}\pm \text{SD})$. Compared with the model group, “A” stimulus group had significant difference in uterine microvascular diameter expansion (P < 0.01). After acupuncture intervention, “B” stimulus group also had microvascular diameter expansion, but the difference was not statistically significant (P > 0.05). “A” stimulus group had significant difference compared with “B” stimulus group in every period, 5 min and 10 min (P < 0.01) and 20 min (P < 0.05).