“…Eudragit coated microparticles were produced for the colonic release of therapeutics [16,18] or proteins [19], but it has not yet been applied for the coating of encapsulated cells. A variety of materials have been tested for the encapsulation of living cells; alginate [4,6,8,12,15,[20][21][22][23] is the most common and versatile, chitosan [9,23], gelatin [22,24], cellulose [23,25], agarose [23,26], dextran [1], carrageenan [9,12,27], poly(lactide-co-glycolide) (PLGA) [1,23], Poly (Ethylene Glycol) [23,28] all have been used individually, and in blends [1,27]. Chitosan is a proven biocompatible natural polymer produced from natural sources (crustacean shells, fungi, and insects), which has been widely used for cell encapsulation and other pharmaceutical purposes [23,29].…”