AA = arachidonic acid; ADP = adenosine diphosphate; cAMP = cyclic adenosine monophosphate; COX = cyclooxygenase; DAG = diacylglycerol; GP = glycoprotein; GPCR = G protein–coupled receptor; IP₃ = inositol trisphosphate; NO = nitric oxide; PAR = proteinase-activated receptor; PDE = phosphodiesterase; PGI₂= prostacyclin; PKC = protein kinase C; PKG = protein kinase; PLA = phospholipase A; PLC = phospholipase C; TP = terutroban; TXA = thromboxane; vWF = von Willebrand factor.