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. 2020 Jul 13;37(12):3439–3452. doi: 10.1093/molbev/msaa173

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© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Fig. 5. — Micrographs of Pasteuria ramosa spores, modified from Duneau et al. (2011), with permission. (A) Scanning electron micrograph of inactive spore with exosporium intact. (B) Transmission electron micrograph of spore “activation,” showing the endospore being released from the exosporium (ex). (C) Transmission electron micrograph of exosporium, showing the densely packed filaments (fil) on the surface. (D) Scanning electron micrograph of “activated” spores with densely packed surface filaments clearly visible.