Provided are an agent for enhancing adherens junction functions, an agent for enhancing E-cadherin, an agent for strengthening intracellular binding force, an agent for enhancing epithelial barrier functions and an agent for enhancing resistance, said agents each comprising at least one substance selected from the group consisting of phosphate esters of ascorbic acid and salts thereof, vitamin E and derivatives thereof, copper chlorophylls and salts thereof, and lysozyme chloride.
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