To examine the oncological properties of CD44-positive cells (i.e., uterine mesenchymal tumor stem-like cells), we isolated a candidate population of CD44-positive SK-LMS-1 subclone as human Ut-LMS stem-like cells from human Ut-LMS primary cells, SK-LMS-1 cells using the CD44-positive selection method with the MagCellect Plus Human CD44+ Cell Isolation Kit [20,21]. This evidence concerns the gene CD44 and neoplasm.