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A: Gastric digestion. Lanes 1–3, 0, 60 and 120 min of incubation, lanes 4 and 5 positive and negative control, respectively. B: Duodenal digestion. Lanes 1–3, 0, 30 and 120 min incubation; lanes 4 and 5, positive and negative controls, respectively. Positive control: Albumin with enzyme, negative control: albumin without enzyme.
