CCND2 and neoplasm: Based on the inverse correlation between let-7a/miR-16/miR-29b and c-Myc and CCND2 expression, we hypothezed that down regulation of c-Myc would restore the expression of tumor-suppressive miRNAs, let-7a, miR-16 and miR-29b, subsequently down-regulate CCND2 in ES cell lines.