Table 6 highlights the significant innate immune response in ewes with pneumonia, as evidenced by elevated levels of proinflammatory cytokines (IL-1α, IL-1β, IL-6, and TNF-α) and free radicals (NO and MDA) in the pneumonia group (PG) compared with those in the healthy control group (HCG). Here, IL6 is linked to susceptibility to pneumonia measurement.