应用改良酚水法提取了钩端螺旋体波摩那型罗株的脂多糖(L-LPS).化学组成分析结果表明L-LPS为糖类、脂类和少量蛋白质的复合物.经堂试验证实,不同毒力的钩端螺旋体LPS含量基本相同.L-LPS在电子显微镜下呈现均一的带状或条状结构,少数条带状结构末端出现分叉.L-LPS的超微结构及其红外光谱与大肠杆菌内毒素极其相似,提示两者可能为同型结构物. Lipopolysaccharide (L-LPS) of Leptospira pomonella was extracted by modified phenolic water method.The chemical composition analysis showed that L-LPS was a complex of carbohydrate, lipid and a small amount of protein.It was confirmed by the hall test that, LPS with different virulence had the same LPS content, L-LPS showed uniform banding or striation under the electron microscope and bifurcation at the end of few bands. The ultrastructure of L-LPS and its infrared spectra Extremely similar to E. coli endotoxin, suggesting that the two may be the same type of structure.