lipid a , the toxic principle of endotoxic lipopolysaccharide , and its precursor , lipid x , interact with human platelets and modulate protein kinase c therein ( grabarek , j. , timmons , s. , and hawiger , j . ( 1988 ) j. clin . invest . 82 , 964-971 ) .
C0023767
lipid a
C0023810
lipopolysaccharide