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#histology #tissue sample #cell structure #microscopic anatomy #biopsy #epithelial tissue #biological slide

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#epithelial tissue #tissue barrier #organ lining #protective layer #covering tissue

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#lining #tissue #moisture #secretion #body surface #epithelial tissue #wet tissue #pink tissue

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