Method for Observing Intravascular BongHan Duct
  A method for observing intra blood vessel ducts which are threadlike bundle of tubules which form a part of the BongHan duct system. By injecting 10% dextrose solution at a vena femoralis one makes the intravascular BongHan duct thicker and stronger to be easily detectable after incision of vessels. The duct is semi-transparent, soft and elastic, and composed of smaller tubules whose diameters are of 10$\mu$m order, which is in agreement with BongHan theory. 
Xiaowen Jiang, Hee-kyeong Kim, Hak-soo Shin, Byong-chon Lee, Chunho   Choi, Kyung-soon Soh, Byeung-soo Cheun, Ku-youn Baik a...