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. 2020 Nov 4;7:534917. doi: 10.3389/fvets.2020.534917

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Copyright © 2020 Morell, Raverty, Mulsow, Haulena, Barrett-Lennard, Nordstrom, Venail and Shadwick.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Left tympanic bone from the beluga Qila. The gross images, (a,b) were taken during the necropsy and dissection of the ears. Note the smooth nodular tan yellow precipitates in the peribullar (a,b) and tympanic cavities (c). Image (b) was obtained after the removal of the tympano-periotic complex. (d,e) Histopathology of hematoxylin-eosin stained left tympanic bone and cavity with numerous lobules of bacteria (d) and florid fungal hyphae interspersed [arrow in (e)] within inflammatory infiltrate and necrotic debris [regions delimited by arrowheads in (e)].