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. 2020 Jul 28;11:1726. doi: 10.3389/fmicb.2020.01726

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Copyright © 2020 Muchaamba, Eshwar, von Ah, Stevens and Tasara.

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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Electron microscopy (EM) reveals variations between N843_10 and N843_15 cell morphology. (A). N843_10 displays typical L. monocytogenes morphology of rod-shaped cells whereas the filamented N843_15 cells varied in shape (B) N843_10 cells displayed normal cell wall morphology and separation during cell division whilst N843_15 cells displayed altered cell wall morphology and lacked clear cell division septum demarcation. (C) N843_10 has a normal cell wall and is undergoing normal septum formation whereas N843_15 has altered cell walls with loosely attached fragments of peptidoglycan protruding from its surface giving it a solar flare appearance.