title: Endotoxins in a lipopolysaccharide preparation and cell envelope of Escherichia coli.
mesh_terms: D002458:Cell Fractionation; D002473:Cell Wall / Q000032:analysis*; D004731:Endotoxins / Q000032:analysis*; D004926:Escherichia coli / Q000032:analysis*; D008070:Lipopolysaccharides / Q000032:analysis*; D012475:Salmonella; D013053:Spectrophotometry
chemical_list: D004731:Endotoxins; D008070:Lipopolysaccharides