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超氧化物自由基由激活的中性粒细胞和单核细胞释放．可破坏宿主细胞膜的蛋白质、不饱和脂类和核酸，并增强内毒素、免疫复合物或花生四烯酸代谢产物对细胞膜的损害。超氧化物歧化酶（ｓｕｐｅｒｏｘｉｄｅｄｉｓｍｕ－ｔａｓｅ．ＳＯＤ）由炎症细胞或其他体细胞如粘膜上皮细胞?
Superoxide free radicals are released by activated neutrophils and monocytes. Can disrupt the host cell membrane proteins, unsaturated lipids and nucleic acids and enhance cell membrane damage by endotoxin, immune complexes or arachidonic acid metabolites. Superoxide dismutase (superoxidedismu-tase.SOD) by inflammatory cells or other somatic cells such as mucosal epithelial cells?