LGR5 and colon carcinoma: We found that: i) CD44v8–10 is selectively expressed in the normal human colonic SC niche; ii) CD44v8–10 is co-expressed with the SC markers ALDH1 and LGR5 in normal and malignant colon tissues; iii) colon carcinoma tissues frequently (80%) stain for CD44v8–10 while staining for CD44v6 was less frequent (40%).