Fig. 4.

A Heat map of mean values of the angiogenesis-related proteins significantly expressed between 3-months post-COVID-19 patients with or w/o pulmonary embolism (PE) and healthy controls. Green represents low expression, red moderate expression, and black high expressed factors. B Pixel density of the angiogenesis-related proteins significantly expressed between 3-months post-COVID-19 patients with or w/o pulmonary embolism (PE) and healthy controls. Unpaired t test, *P < 0.05, **P < 0.01, ***P < 0.001. TIMP-1 tissue inhibitor of metalloproteinase 1, uPA urokinase plasminogen activator, VEGF vascular endothelial growth factor, MMP-8 matrix metalloproteinase-8, MMP-9 matrix metalloproteinase-9, PDGF-AA platelet-derived growth factor subunit A, PDGF-BB platelet-derived growth factor subunit B, CXCL4 platelet factor 4, PF4 platelet factor 4, CXCL16 platelet factor 16, DPPIV dipeptidyl peptidase IV (DPPIV), CD26 cluster of differentiation 26