AGT and triple-A syndrome: It was also found that the AAA incidence of Ang II-infused WT mice (45.5%, that is 5/11) was lower than that of age-matched (about 12 months) Ang II-infused α7nAChR−/− (63.6%, that is 7/11), and the average maximal abdominal aortic diameter in α7nAChR−/− mice was longer than that of WT mice.