Surface PDI enhances PS internalization in ECs. A small PS efflux was induced in ECs in response to TG stimulation for 1 hour, and subsequent PDI effect on PS internalization was assessed by annexin V–FITC labeling of residual exposed PS. (A) Representative micrographs. (B) Scatter plot representation of MFI ± SEM of 180 to 240 cells per group. Statistical analysis was performed by 1-way ANOVA: ***P < .001.