... has been found from skin, cockcomb, brain, vitreum, connective tissue, umbilical cord, human serum, articular fluid, gristle, human urine, cock embryo, oocyte ... and remodel the tissues. Although HA is non-adhesive to cells alone, several cell surface receptors for HA have been ... is called CD44, which is present on vascular endothelial cells where it is thought to be necessary for building blood ...