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3H labelled metabolites formed after transepithelial transport of 3H labelled horseradish peroxidase ([ 3H]HRP) across intestinal HT29-19A cells, as shown by reverse phase high performance liquid chromatography (RP-HPLC). [3H]HRP before transport (A), and 3H labelled metabolites and [3H]HRP after transport in untreated cells (B) and in cells treated with interferon γ (IFNγ) for 48 hours (C). This elution profile is representative of two separate experiments.
