Fig. 8From: Combining single-cell RNA sequencing of peripheral blood mononuclear cells and exosomal transcriptome to reveal the cellular and genetic profiles in COPDProtein–protein interaction network and its connection with sputum clinical variables. Elliptical nodes represent proteins, hexagonal nodes represent clinical variables, and the colours represent libraries. EOS eosinophil, LYM lymphocyte, MAC macrophageBack to article page