[Microstructural characteristics of lymphatic vessels in skin tissues of acupoints "Taichong" and "Yongquan" in the rat].

The lymphatic capillaries, blood capillaries and nerve fibers extensively distribute in the skin tissues of LR3 and KI1 regions in rats, suggesting an involvement of the immunomodulation in the effects of acupuncture in pathological conditions, despite being not limited to the acupoint regions in the distribution of lymphatic capillaries.