MCM2 and neoplasm: The same analysis was performed in order to determine (1) the amount apoptotic cells (positivity to Tunel reaction), (2) proliferation rate (Ki67 staining) and (3) malignant potential (positivity to Anti-GD2 antibody), in order to correlate the expression level of MCM2 and CA9 not only to the growth of the tumor but also to its expected dangerousness.