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#lipid structure #cell membrane #intercellular lipids #skin structure #barrier function

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#barrier function #immune defense #trapping pathogens #protective lining #secretion #iga #wet barrier

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#trapping pathogens #immune function #barrier function #microbial capture #sticky layer

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#protective lining #body barrier #mucous membrane shield #moist defense #internal lining #barrier function

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#epithelial tissue #barrier function #tight junctions #cell junctions #tissue layer #protective lining #body covering