Fig 4.

uPA activity in arterial extracts. Arteries were transduced with AdrbtuPA or AdCMVNull (both at 4 × 10⁹ pfu/ml). Three days later, artery segments were harvested, and proteins were extracted. Extracts were assayed with the uPA-specific chromogenic substrate S-2444. Data points represent individual arteries; bar heights indicate group medians.