Figure 5: Percent change in blood flow volume in the brachial artery before needle insertion (ins) and during and after needle stimulation (stim) at ST36, LR3, and the non-acupoint. The values represent means and corresponding standard errors (SEM). *, **Significant difference ( and , resp.) relative to the blood flow volume before needle insertion at LR3, ST36, or the non-acupoint. ††Significant difference ( ) between the LR3 and ST36/non-acupoint groups.