CD4 and Sepsis: In immunosuppressed sepsis mice (CLP), relative body weight and survival rate decreased, while BALF colony‐forming units and total cells increased (Figure S1I‐L, Supporting Information) following a similar trend.[20] CD4+ and CD8+ T cells in peripheral blood were reduced, while regulatory T cells increased, and lymphocyte and monocyte HLA‐DR levels were lowered (Figure S1M‐Q, Supporting Information), consistent with the immunosuppressive state observed in sepsis patients (Figure S1A‐C, Supporting Information).