Roadblock for antigens--take a detour via M cells.
Institute for Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, Giessen, Germany. martin.diener@vetmed.uni-giessen.de.
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http://orcid.org/0000-0003-2194-4636
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Diener
D000818:Animals; D001522:Behavior, Animal; D006801:Humans