| http://www.w3.org/ns/prov#value | - Additional confounders (that might have taken years to segregate out) include in vivo variables such as the biological activity of the colorectal area (continuous mucus secretion, peristaltic activity, frequent stool passage) and the absence of an independent, visual identifier to guide biopsy acquisition relative to where the investigator-administered topical drug might be located 30 minutes afte
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