Platelet aggregation as a function of time from blood from aspirin treated and control mice in response to exposure to arachidonic acid (AA) or spontaneously. Values are expressed as percent aggregation. "Time (s)","Aspirin - AA","Control - AA","Aspirin - Spont.","Control - Spont." 0.5,0.25,0.1,0,0.4 10,-0.1,0.2,3.5,-0.2 20,-0.45,2.5,-1.8,0.1 30,-0.55,25.65,-2.2,-0.2 40,-0.75,46.1,-2.2,-0.2 50,-0.75,57.35,-1.5,-0.4 60,-0.85,64.9,-1.3,-0.4 70,-1.05,66.25,-1.9,-0.2 80,-1.1,71,-2.5,-0.5 90,-1.1,69.5,-1.6,-0.2 100,-1.1,71.95,-2.3,-0.1 110,-1.25,74.2,-1.9,-0.2 120,-1.2,75.35,-1.8,-0.4 130,-1.25,75.1,-2,-0.5 140,-1.15,77.6,-2.1,-0.4 150,-1.2,77.3,-1.9,-0.2 160,-1.05,76.25,-2,-0.2 170,-1.25,77.6,-2.3,-0.4 180,-1.25,77.25,-1.9,-0.3 190,-1.15,74.9,-1.8,-0.2 200,-1.15,79.35,-1.9,-0.5 210,-1.15,79.2,-2,-0.5 220,-1.15,80.1,-2.7,-0.5 230,-1.25,78.7,-1.9,-0.8 240,-1.3,81.3,-2,-0.1 250,-1.2,80.7,-1.5,-0.4 260,-1.2,79.95,-2.9,-0.8 270,-1.15,82.4,-1.4,-0.4 280,-1.2,80.75,-1.6,-0.6 290,-1.15,81,-2.4,-0.4 300,-1.1,81.3,-1.9,-0.3 310,-1.15,79.35,-2,-0.3 320,-1.15,80.9,-0.9,-0.2 330,-1.15,82.5,-2.3,-0.5 340,-1.05,80.2,-1.5,-0.5 350,-1.05,80.6,-0.8,-0.2