The levels of interleukin (IL)-6, tumor necrosis factor (TNF)-α, and IL-2, and the population of white blood cells were significantly reduced in the bronchoalveolar lavage fluid (BALF) of allicin-treated rats with ALI, which indicated that allicin attenuated pulmonary inflammation in rats with ALI. The gene discussed is IL2; the disease is acute respiratory distress syndrome.