ACTA1 and triple-A syndrome: Consistent with these observations from in vitro assays, DTx‐induced depletion of ILC2 reduced AAA lesion SMC content as determined by myosin heavy chain 11 (Myh11) immunostaining (Figure 7D) and blunted lesion SMC proliferation as determined by immunofluorescent staining with Ki67 and α‐SMA antibodies (Figure 7E).