Expression of PAI-1.

<p>Liver lysates obtained from the NZB/W F1 mice receiving PBS, NS1, VP1u or VP2 were probed with antibodies against (A) PAI-1. Bars represent the relative protein quantification of (B) PAI-1 on the basis of β-actin. Serum level of (C) PAI-I was determined using an ELISA kit. Similar results were observed in three independent experiments, and * indicates the significant difference, P<0.05.