analysis of the lipopolysaccharide ( lps , endotoxin ) in cell sonicates of four danish vaccine strains of bordetella pertussis ( 3803 , 3825 , 3843 and 3860 ) and of purified strain 3803 lps in sodium dodecyl sulphate-polyacrylamide gel electrophoresis by silver staining , showed identical profiles .
C0014264
endotoxin
C0023810
lps