The co-expression of MPO and Cit-H3 (markers for NETs) was lower in the bronchi and alveoli of STING-KO mice infected with PR8 than in those of the counterpart WT mice (Figure 6A, Supplementary Figure S2B), indicating that the activation of STING promotes the formation of NETs in viral pneumonia. The gene discussed is STING1; the disease is viral pneumonia.