Figure 1.

Outer diameter sizes of abdominal aortae in healthy rats shows near-normal distribution (A). Outer diameter of healthy rat abdominal aortic aortae (day 0; pre-perfusion) and that of rat AAAs, as measured in the region of maximal expansion and shown as a function of post-AAA induction time (B). % changes in diameter relative to healthy suprarenal aortal segments (healthy internal controls) are indicated in Table 1. Aortal expansion appeared slower between 14 and 21 days, than earlier, suggesting auto-stabilization of the AAA, perhaps via a compensatory matrix regenerative process.