Channel chart: yinqiao mai (Yin Heel Vessel), Chinese woodcut
Licence: Public Domain Mark
Credit: Channel chart: yinqiao mai (Yin Heel Vessel), Chinese woodcut. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: Channel chart: yinqiao mai (Yin Heel Vessel), Chinese woodcut. Wellcome Collection. Source: Wellcome Collection.