SYN: intratubal.
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in·tra·lu·mi·nal -'lü-mən-əl adj situated within, occurring within, or introduced into the lumen <\intraluminal inflammation of the esophagus>
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in·tra·lu·mi·nal (in″trə-looґmĭ-nəl) within the lumen of a tube, as of a blood vessel; endoluminal.Medical dictionary. 2011.