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. 2017 Jun 8;34(9):2367–2379. doi: 10.1093/molbev/msx174

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© The Author 2017. 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 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 5. — Flagella-less mutants isolated from two crc-mutated lineages block wild-type swarming but multi-flagellated hyperswarmers are less vulnerable to blocking. (A) Swarms of wild-type, ΔcbrA crc* fleR* (isolate 1-5), and ΔcbrA crc* fleN* (isolate 6-8) with insets detailing labeled flagella. Isolate 1-5 does not have flagella while 6-8 has multiple flagella (the wild-type is mono-flagellated; scale 5 µm; see also supplementary fig. S10, Supplementary Material online). (B) Swarming competitions between fluorescently labeled wild-type, wild-type background hyperswarmer and wild-type background ΔflgK. Mixed colonies at 5:1 ΔflgK:wild-type mixing ratio show decreased swarming whereas the hyperswarmer, less vulnerable to blocking, only shows decreased swarming radius at 100:1 ΔflgK:hyperswarmer.