Immunostaining for markers of tumor proliferation (Ki-67), apoptosis (caspase-3), tumor-initiating cells (ALDH), macrophage infiltration (F4/80), E-cadherin, and EGFR signaling (phospho-EGFR, p-EGFR) were compared between control and 10% MSC primary tumors. Here, MKI67 is linked to neoplasm.