STAT1 and aneurysm: Figures 5B, C) and significantly decreased M1-like macrophage infiltration in aneurysm walls (44.7% vs. 24.7%, P<0.05. Figures 5D, E). However, rmGas6 treatment boosted the phosphorylation of STAT1 (51.6% vs. 39.0%, P<0.01. Figures 5B, C) and M1-like macrophage infiltration (44.7% vs. 73.0%, P<0.01. Figures 5D, E).