Does preoperative thromboxane A2/prostaglandin H2 receptor activity predict early graft thrombosis?
Elevated platelet TXA2/PGH2 receptor levels and enhanced sensitivity of platelet aggregation to TXA2 predict early arterial graft thrombosis. Specific TXA2/PGH2 receptor antagonism may prevent one of the mechanisms that contributes to early graft occlusion.
Inhibition of root elongation in maize by high external nitrate is likely to result from a reduction of nitric oxide synthase-dependent endogenous NO levels in maize root apical cells.