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The epithelium of the gastro‐intestinal tract of Polypterus senegalus (Pisces:Brachiopterygii)
Author(s) -
Magid A. M. Abdel
Publication year - 1975
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051460403
Subject(s) - biology , anatomy , alimentary tract , epithelium , stomach , pathology , medicine , biochemistry , genetics
Light and electron microscopic studies revealed ciliation of the epithelium of the entire gastro‐intestinal tract of Polypterus . Acidophil cells were found in the different regions of the alimentary canal, including its derivatives (the lungs and hepato‐pancreatic ducts). Compared to other primitive forms and modern teleosts, the extreme fusion of the intestinal caeca in Polypterus , the ciliation and the overall dispersion of acidophil cells may represent a special organization inherited from a palaeoniscoid ancestor. Attention is also drawn to a possible channel of early evolution and function of the stomach diverticulum.