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(A) Section from intact jejunum and the distribution of the respective layer following Herovici's staining. (1) serosa, (2) muscularis externae [longitudinal smooth muscle cells (SMC)], (3) myenteric plexus, (4) muscularis externae (circular SMC), (5) submucosa, (6) villi. Section from the jejunum following incubation with the dissociation enzyme trypsin for 15 min (B), 30 min (C), 45 min (D), 60 min (E), 75 min (F) and 90 min (G). Scale bar = 100 µm.
