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In vitro retention profiles of samples on the front (a), rear (b) and side (c) of ex vivo pig tongue and example fluorescent images (d). Significance value of p < 0.05 is represented by * between respective groupings (n = 3). Error bars are ±standard deviation. Fluorescence intensity of the retained polysaccharide was quantified by ImageJ software after being washed with artificial saliva up to 20 mL.
