PMN were evaluated before (d0) and after (d3) MSC implantation in control, MC- and MSC/MC-treated wounds. Analysis of PMN infiltrating wounds was performed by two independent observers (low powered field microscopy) by using a semiquantitative cross-scoring system (low = +, moderate = ++, high = +++). Results are presented as means ± SE. There was not a statistically significant difference in PMN infiltration between all experimental groups (control, n=8; CM, n=6; MSC/CM, n=9).