The frequency of cluster 9 was identified as DNT cell with markers of CD3+ TCRd+CD45RA+CCR7−CD11c+CD45RO+ T‐box expression in T‐cell (Tbet)+ Granzyme B+ (Table 3), and was one of the increased subsets of CD3+ T cells in acute pneumonia. This evidence concerns the gene GZMB and pneumonia.