Lipopolysaccharide (LPS), the main component of the cell wall of gram-negative bacteria, is one of the most important factors causing pulmonary infection and systemic infection.

• 革兰氏阴性细菌内毒素的主要活性成分脂多糖(lipopolysaccharide,LPS)是导致肺部感染和全身感染的主要因素。