HeLa and MiaPaCa2 cell lines were subjected to immunostaining for the cancer marker TAG-72 (45, 46, 47), the stem cell marker CD133 (48, 49, 50), and the stem cell glycan marker fucose α1-2galactose α1-3 structure (40), recognized by the rBC2LCN bacterial lectin (Fig. 3, A and B, respectively). This evidence concerns the gene PROM1 and cancer.