Although the transcription of these chemokines in lungs of C57BL/6 or Gcnt1−/− mice was similar upon a low dose of infection, the expression of Cxcl2 was higher in Gcnt1−/− deficient mice than in C57BL/6 upon a high dose of infection (Fig. 3f). The gene discussed is CXCL2; the disease is infection.