FIG. 2.

Histologic study of the acupoint. (A) Histologic section of rabbit skin on a detected point showing the neurovascular complex (NVC) with a drawn representation. (B) Sampling of a neurovascular bundle excised from the leg of a human volunteer with the complete NVC. (C) View of the myelinated and unmyelinated fibers around a vessel within the NVC. Left: black Chinese ink injected to localize the acupoint. (D) After argentic impregnation, on the left, unmyelinated nervous fibers within the wall of the artery of the NVC, and on the right, myelinated nervous fibers between vessels.