Fig. 4.
Zymographic analysis on (A) gelatin- or (B) casein-containing gels of arterial extracts (5 μg total protein) obtained from MMP-3+/+ or MMP-3−/− mice without (lane 1) or 1 week after (lane 2) vascular injury. Lanes 3 and 4 in (B) represent arterial extracts obtained from t-PA−/− or u-PA−/− mice, respectively.