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. 2020 Apr 29;11:423. doi: 10.3389/fgene.2020.00423

FIGURE 2.

FIGURE 2

Data preprocessing of the derivation cohort. Box plot and principal component analysis showing the overall profiles of GSE112366 and GSE75214 (A,B) before and (C,D) after normalization. The results confirmed removal of the batch effect PCA.