Consistent with results regarding immune cell and neutrophil numbers, the concentrations of IL-1α, IL-6, and IL-12 subunit p40 in BALF on day 1 post-Mp infection were significantly lower or tended to be lower in C57BL/6J, DBA/1, and CBA/N mice than in BALB/c mice (Figure 3). The gene discussed is IL1A; the disease is infection.