Fig. 4From: Identification of novel biomarkers linking depressive disorder and Alzheimer’s disease based on an integrative bioinformatics analysisThe protein–protein interaction (PPI) network analysis. A PPI network of the DEIRGs from AD and MDD. Red nodes were identified from the GSE5281 dataset, and blue nodes were identified from the GSE76826 dataset. B All lists are merged and Colored by Cluster (Full connection). C All lists are merged and Colored by Cluster (Keep MCODE nodes only)Back to article page