Thrombin generation in the plasma of lactadherin-deficient mice and control littermates. The reaction mixture consisted of plasma (80 μL) and the trigger solution (3 ng purified Russell viper venom in 40 μL), fluorogenic thrombin substrate Z-Gly-Gly-Arg-AMC (2.5 mM), and CaCl2 (10 mM). The generation of thrombin was measured as a function of fluorescence in a fluorimeter over a period of 30 minutes. Thrombin was then calculated using an α2-macroglobulin thrombin complex standard as described by Hemker et al.27 Representative data are presented. Blood samples from 5 mice from each group (lactadherin−/− and littermate controls [lactadherin+/+]) were pooled for each experiment.