CXCL-12, RECK and TIMP-2 expression in PICP-treated and untreated contro-lateral tumors. Micrographs are representative of the results obtained from the analysis by immunoperoxidase of at least two series of contro-lateral tumors treated or untreated with PICP. On the right side is indicated the day after implant when the tumors were explanted. A) with antibody to CXCL-12, B) with antibody for RECK; C) with antibody for TIMP-2. Bar is 25 μm.