We report lectin microarray profile of the polysaccharide fraction derived from Sasa veitchii leaf that exhibits anti-influenza activity. This fraction showed higher reactivities with lectins known as binders to oligo-mannose, fucose, or galactose. Our findings along with previously reported monosaccharide components suggest that the polysaccharide can be cross-reactive with cell surface receptors involved in immune system, thereby exerting anti-influenza activity.
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