Keywords: فرآیندهای سلولی; Polymer; Hydration; Stiffness; Biointerface; Cellular processes; ECM; extracellular matrix; PEG; polyethylene glycol; PEO; poly(ethylene oxide); PEMs; polyelectrolyte multilayers; FN; fibronectin; PGs; proteoglycans; BMSCs; bone marrow stromal cells; Hap;