Phox-I inhibited CRP or thrombin-induced phosphorylation of Akt. Phox-I was added to washed human platelets 2 min prior to addition of CRP or thrombin. The reactions were terminated at 5 min by adding 4× sample buffer and processed for western blotting and probed for Akt, p-Akt and β-tubulin. Phosphorylation was quantified by densitometry. The data in the bar graphs are mean ± SE from three experiments (*P < 0.0001, **P < 0.001, ***P < 0.05). CRP, collagen-related peptide; SE, standard error