单词	sialic acid
释义	sialic acid /sʌɪˈalɪk / noun [mass noun] Biochemistry A substance present in saliva which consists of acyl derivatives of neuraminic acid.If scientists treat blood cells with an enzyme to remove sialic acid, the parasite can no longer invade.... Biochemical markers of metastasis such as lung hydroxyproline, uronic acid, serum sialic acid and gammaglutamyl transpeptidase were estimated. Many pathogens use sugar groups of surface glycoproteins, in particular sialic acid residues, as receptors for invasion. Origin 1950s: sialic from Greek sialon 'saliva' + -ic.
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