Marker Expression in healthy tissue Marks cancer stem cells in CD19 Broadly on B lymphocytes B cell malignancies CD20 Broadly on B lymphocytes Melanoma CD24 Broadly on B cells; neuroblasts Pancreas/lung cancer negative on breast cancer CD34 Hematopoietic and endothelial progenitors Hematopoietic malignancies CD38 Multiple stages of B and T cells Negative on AML CD44 Broadly on many tissues Breast/liver/head and neck/pancreas cancer CD90 T cells neurons Liver cancer CD133 Proliferative cells in multiple organs Brain/colorectal/lung/liver cancer EpCAM/ESA Panepithelial marker Colorectal cancer , pancreatic cancer ABCB5 Keratinocyte progenitors Melanoma ABCB5: ATP-Binding Cassette transporter B5; EpCAM: Epithelial Cell Adhesion Molecule; ESA: Epithelial-Specific Antigen

Table 1: Surface markers used for the identification of CSCs.