Fig. 4From: Rediscovery of poly(ethylene glycol)s as a cryoprotectant for mesenchymal stem cellsMembrane stabilization of MSCs by PEGs. a Changes in fluorescence intensity in the medium containing PEGs. Control is the medium containing neither DMSO nor PEGs. DMSO 20% and DMSO 10% indicate the medium containing and 20% and 10% of DMSO, respectively. b Comparison of the fluorescence intensity at 180 min from plot a). **: p < 0.01. N = 3Back to article page