Additional file 3 of Elucidating the role of transcription factors in molecular pathways underlying infertility in endometriosis: a bioinformatics approach

Supplementary Material 3. Figure S1. PCA of combined gene expression data from four microarray datasets after batch effect correction. Samples separate clearly by disease status (triangles: endometriosis; circles: control) along PC1, rather than by dataset (GSE120103: pink, GSE23339: green, GSE51981: blue, GSE7305: purple), indicating successful removal of technical variation and highlighting conserved biological differences. Figure S2. Protein-protein interaction (PPI) network of the overlapped DEGs among the datasets.