Marker Stem cell marker Biomarker diagnostic Biomarker therapeutic Biomarker prognostic Surface markers, CD CD24 (332) CD44 (333–335) (336)* (337, 338) (339) CD133 (334, 340) (336)* (340) (338, 341–343) (340, 344) CD166 (333) (336)* (333) Surface markers, not CD EpCAM (335) (336)* (345, 346) (347)* LGR5 (335, 348–350) (336)* (351) (352) (353, 354) Intracellular markers ALDH (335, 355, 356) (336)* (355) (357)* Letm1 (358) (358) Nanog (359, 360) (336)* (361) (361, 362) Oct-3/4 (363, 364) (336)* (363, 365) Sall4 (366) (366) Sox2 (359, 367, 368) (336)* (367–369)