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3H labelled peptides formed during transepithelial transport of 3H labelled horseradish peroxidase ([ 3H]HRP) across intestinal HT29-19A cells as shown by steric exclusion HPLC. [3H]HRP before transport (A),[3H]HRP after 4.5 hours in the apical compartment (B),[3H]metabolites after transepithelial transport in the basal compartment, in untreated cells (C) and cells treated with interferon γ (IFNγ) (D). This chromatogram is representative of two separate experiments.
