The mouse model of BCG-pleural infection was performed, then the pleural cavity cells of WT (wild type), tmTNF KI and TNF KO mice were recovered before and after infection, and the frequency of both CD3+CD11b+TCRαβ+ and CD3+CD11b+TCRαβ− myeloid cells was assessed by flow cytometry (Figure 4A). Here, TNF is linked to infection.