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Effect of nonspecific stool extracts on SMV VLP attachment to H type 3. The effect of various archived stool extracts on SMV VLP attachment (10 μg/ml) to H type 3 was investigated by using the same microwell-based assay described in the legend to Fig. 4. Lanes Se+ Pre-challenge and Se− Pre-challenge contain virus-free stool extracts from secretor-positive and secretor-negative human volunteers, respectively, obtained prior to norovirus challenge.
