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Preventive effect of heparinization of autologous blood on the contractile response to thrombin. Summary of the contractile response to 1 U ml−1 thrombin and 10 μM PAR1-AP in the basilar artery of rabbits injected with saline (control) or autologous blood, without (subarachnoid haemorrhage (SAH)) or with heparinization (SAH+heparin), before injection. The contractile response was evaluated in the absence of endothelium. The data are the mean±s.e.m. (n=4–5). *P<0.05.
