the results showed that the cgmp stimulatory activity in e. coli 055 : b5 cells co-purified in a parallel fashion with the lps molecule derived from those cells , that the three chemically defined , highly purified lps preparations were all very potent stimulators of cgmp levels , and that the ability to increase cgmp levels of lipid a prepared from a highly purified lps was comparable in potency to the intact lps , whereas the polysaccharide portion of the molecule was without activity .
C0023767
lipid a
C0023810
lps