(A) The number of viable cells as determined by trypan blue exclusion was determined for CPCeP, CPCe, and CPCs over a six day time course (mean ± SEM, n=4/group). (B) Metabolic rate of CPCeP, CPCe, and CPCs was measured by MTT assay over a 48 hour time course (mean ± SEM, n=4/group). (C) Metabolic rate evaluated by MTT assay in CPCeP treated with and without 10μM Quercetagetin over a 72 hour time course (mean ± SEM, n=4/group). (D) Immunoblot analysis of p27 protein in CPCeP, CPCe, and CPCs (n=3/group). *p<.05, **p<.01, ***p<.001.