“…27 HS 3 is more active and produces shorter chain length HAs while, HS 1 and 2 synthesize longer chain length HAs. 28 The role of HA in fundamental physiological and pathological process such as embryo development, 29 migration, adhesion, proliferation and differentiation of cells, [30][31][32][33][34] immune surveillance, 35 inflammation, 36 wound healing, 37 angiogenesis, malignant transformation and viscoelasticity [38][39][40][41][42] well documented, but beyond the scope of this article.…”