Proteinase-activated receptor 1, PAR-1/PAR1, Coagulation factor II receptor, Thrombin receptor, F2R, CR2R, PAR1, TR, thrombin, innate immune system response, proteinase-activated receptor, PAR, G protein-coupled receptor, cellular response, vascular physiology, development, inflammation, cancer progression, platelet activation, vascular development, platelet, vascular endothelial cell, PAR1, angiogenesis inhibitor peptide, Parstatin, blood coagulation, hemostasis, GPCR, G-protein coupled receptor, STAT protein, platelet activation, immune response, and vascular development