Clustering visualization of the discriminating effects of the marker genes on white and Chinese children's ALL samples. (A) Hierarchical clustering of 535 diagnostic white children's ALL samples (columns) from 3 published datasets using the 62 classification maker genes (rows). (B) Hierarchical clustering of the new 100 diagnostic ALL samples (columns) using the same 62 classification maker genes (rows). Hyperdiploid with more than 50 chromosomes (Hyperdiploid>50) samples in panel B are computationally predicted rather than being experimentally confirmed as in panel A. The expression value for each gene is indicated by color intensity, with red representing high expression and green representing low expression.