AFP and neoplasm: The correlation coefficient (r) of MEblack indicated that it was positively correlated with tumor grade (r = 0.78, p = 0.01) and that MEtan and MEblue were negatively correlated with the AFP level (r = −0.95, p = 8e−05) and the AFP high/low trait (r = −0.77, p = 0.02), where AFP > 25 ng/ml was considered to be high, respectively.