IL9 and aneurysm: Between the two experimental groups, IL-9, IL-12(p40), RANTES, and VEGF also showed significantly higher levels when in the presence of aneurysm-containing serum than in the presence of aneurysm-free serum (p = 0.005, 0.005, 0.005, and 0.0001, respectively, Supplementary Figure 1).