in a group ( n = 7 ) of patients who lack epinephrine-induced platelet aggregation due to abnormal thrombopoiesis , binding site number was decreased ( 304 +/- 36 vs. 572 +/- 29 sites/platelet , p less than 0.001 ) and kd tended to be greater ( 8.69 +/- 2.44 vs. 5.40 +/- 0.31 nm , p = ns ) than in normal subjects ( n = 46 ) , despite having similar plasma catecholamine levels .
C0221145
thrombopoiesis
C0005821
platelet