TF antigen and activity expressed by unstimulated or LPS-stimulated (0.4 ng/mL) monocytes added with and without vitamin E (50 μmol/L). The paired t-test was used for statistical analysis. *P = .003; **P = .001. The top and bottom of the box represent the standard error. The square in the middle of the box represents the mean value. The lines extending above and below the box refer to the standard deviation.