| ≥1 piece |
HA widely consists in the extracelluar spaces of animal tissue. Almost kinds of animal tissue contain the different quantity of HA. Today Hyaluronic Acid has been found from skin, cockcomb, brain, vitreum, connective tissue, umbilical cord, human serum, articular fluid, gristle, human urine, cock embryo, oocyte, artery and vein etc.