All Samples will be collected following informed consent signatures of patients both on the designated informed consent form for this protocol and the tissue bank form. We may have as many as 3-4 patients/ week. Collected samples will be resected by experienced personnel either from the Thoracic Surgery Department or the Pathology Department (as part of their job description in the Tissue Bank). Fresh samples will be transported to the Weizmann institute for FACS and IHC.