Key points are not available for this paper at this time.
Aspirin-type drugs may inhibit irreversible clumping of human blood platelets by blocking the enzymatic conversion of arachidonic acid to a hitherto undiscovered factor, labile aggregation-stimulating substance, which triggers aggregation and to prostaglandin E(2), which sensitizes the platelets to its aggregatory effects.
A.L. Willis (Fri,) studied this question.