Expression of phosphorylated ERK, JNK and p38 by hMSCs seeded on Scl2-1, Scl2-2 or Scl2-3 coated surfaces. For the purpose of comparison, results for the Scl2-2 and Scl2-3 groups were normalized to the basal expression levels associated with the Scl2-1 control. Results represent an average of n = 3-4 samples per treatment group. * indicates a significant difference from Scl2-1, p < 0.05. # indicates a significant difference from Scl2-2, p < 0.05.