diisopropylfluorophosphate ( dfp ) , a group-specific irreversible inhibitor of serine proteases , has been shown to exert time-dependent inhibition of dna synthesis of lymphocytes stimulated by three different b lymphocyte mitogens : purified protein derivative of tuberculin ( ppd ) , endotoxin protein ( ep ) , and lipopolysaccharide ( lps ) .
C0014264
endotoxin
C0023810
lipopolysaccharide