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Fig. 1. Gross anatomy of the rectal part of the intestine in elephant fish
(AC) and Southern chimaera (D,E). (A) A longitudinal slice of the
post-valvular intestine. The arrow indicates the anterior end of glandular
tissue at the termination of valvular intestine. (B,D) Whole-mount view of the
glandular tissue of elephant fish (B) and Southern chimaera (D). Luminal
epithelia and inner muscle layers were removed to expose the glandular tissue.
Arrows in D indicate openings of the glandular tissues. (C,E) Magnified view
of the glandular tissue in B and D, respectively. Scale bars, 0.5 mm (A); 1 mm
(B,D); 200 µm (C,E).