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Within or among the epithelial cells.
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in·tra·ep·i·the·li·al -.ep-ə-'thē-lē-əl adj occurring in or situated among the cells of the epithelium
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in·tra·ep·i·the·li·al (in″trə-ep″ĭ-theґle-əl) situated among the cells of the epithelium.Medical dictionary. 2011.