[Retracted] Exploring Early Physical Examination Diagnostic Biomarkers for Alzheimer’s Disease Based on Least Absolute Shrinkage and Selection Operator

Figure 2

Identification of differentially expressed genes shared by AD prefrontal cortex and peripheral blood. (a, b) Principal component analysis (PCA) of the GSE33000 dataset and GSE97760 dataset. (c, d) Volcano plot of AD controls in the GSE33000 (c) and GSE97760 (d) dataset, red represents upregulated genes, blue represents downregulated genes, and gray represents genes with no significant differential expression. (e) Differentially expressed genes (DEGs) shared by the GSE97760 dataset and the GSE97760 dataset. (f) GSE33000 heat map of the 33 shared DEGs in the dataset. (g) Heat map of the 33 shared DEGs in the GSE97760 dataset.

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