CD8A and triple-A syndrome: In addition, among the immune cells that infiltrated the AAA samples (compared with normal samples) and RAAA samples (compared with AAA samples) with FDEG expression that met the criteria for selection, the numbers of CD8+ T cells, naive CD4+ T cells, Tregs, M0 macrophages, M2 macrophages and eosinophils were higher in the AAA samples than in the normal samples, and fewer Tregs were found in the RAAA sample than in the AAA sample.