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Sections of oesophagus on days 1 and 8 posthatch showing matured epithelium (ep), lamina propria (lp), oesophageal glands (red arrow) lamina muscularis (lm), submucosa (sm), inner circular layer of tunica muscularis (tmc), outer longitudinal tunica muscularis (tml), and tunica adventitia (ta).
