Therefore, various cell lines, including glioblastoma (A172, U-87 MG), prostate (PC-3 and LNCaP), breast (MDA-MB-231), pancreatic (Panc-89), lung (A549), and colorectal (HT-29) cancer, were screened for FAP-expression on the cell surface using flow cytometry. The gene discussed is FAP; the disease is cancer.