On the other hand, there were normal caliber esophagi with severe denervation.
Sheila J. Adad, Débora Cristiane da Silva Andrade, Edison Reis Lopes, Edmundo Chapadeiro 1991, 'Contribuição ao estudo da anatomia patológica do megaesôfago chagásico Contributionto the study of the pathology and pathogenesis of the chagasic megaesophagus', Revista do Instituto de Medicina Tropical de São Paulohttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46651991000600004. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Lizards and mammals were seen to have normal, midsagittally placed tracheae and esophagi.
Jeremy J. Klingler 2016, 'On the Morphological Description of Tracheal and Esophageal Displacement and Its PhylogeneticDistribution in Avialae', PLOS ONE10.1371/journal.pone.0163348. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Elastins and fibronectins were preserved in the esophagi and ureters.
Stefan Schleifenbaum, Torsten Prietzel, Gabriela Aust, Andreas Boldt, Sebastian Fritsch,Isabel Keil, Holger Koch, Robert Möbius, Holger A Scheidt, Martin F X Wagner, NielsHammer 2016, 'Acellularization-Induced Changes in Tensile Properties Are Organ Specific - An In-VitroMechanical and Structural Analysis of Porcine Soft Tissues.', PLoS ONEhttp://europepmc.org/articles/PMC4784745?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)