Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The position of acupunctured points and the area divisions for analyzing mean blood perfusion. ○ denotes Chengshan (BL57), and the broken line denotes bladder meridian. △ denotes the nonacupoint on bladder meridian, and □ denotes the nonacupoint off bladder meridian. The upper set of the figure is the direction of foot, and the inferior set is the direction of head.
