The commercial speech doctrine is the stepchild of first amend-. ment jurisprudence: Liberals donât much like commercial speech. because it is commercial; conservatives mistrust it because it is. speech. Yet, in a free market economy the ability to give and.
Definition of GLYCOSAMINOGLYCAN. : any of various polysaccharides derived from an amino hexose that are constituents of mucoproteins, glycoproteins, and blood-group substances âcalled also mucopolysaccharide.ADVERTISEMENT. any of various polysaccharides derived from an amino hexose that are constituents of mucoproteins, glycoproteins, and blood-group substancesâcalled also mucopolysaccharide.
There are various glycosaminoglycans in the dermis. The most common ones are: hyaluronic acid, chondroitin sulfate, keratin sulfate, dermatan sulfate, heparin sulfate, and heparin. The key thing to know about glycosaminoglycans is that they are water-binding substances. The GAGâs in the ground substance of the dermis attract water (brought to the dermis by blood vessels). Water in the dermis also diffuses to the lower layers of the epidermis, and eventually migrates upward through the epidermal layers.