the fractions differed significantly from one another with respect to the neuraminidase susceptibility of their sialic acids ( p less than 0.01 ) , the percentage of c4 ( p less than 0.01 ) and side-chain substituted sialic acids ( p less than 0.05 ) , and the molar fucose-sialic acid ratio ( p less than 0.05 ) .
C0037025
sialic acids
C0067762
sialic acid