AGT and triple-A syndrome: First, although our study shows that VSMCs undergoing apoptosis could induce the proliferation of the adjacent live VSMCs in AngII‐ or AngII+BAPN‐induced AAA or AD mouse models, as well as in vitro transwell coculture experiment of AngII‐treated/untreated VSMCs, not all of the AngII‐treated VSMCs underwent apoptosis.