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. 2010 Aug 11;5(8):e11882. doi: 10.1371/journal.pone.0011882

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Adiba et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) A non-virulent E. coli strain (B REL606; 10⁸ cells) was plated with D. discoideum (10² cells). Bacterial lysis plaques were observed, characteristic of the grazing phenotype. (B) A virulent E. coli strain (536; 10⁸ cells) was plated with D. discoideum (10² cells). No bacterial lysis plaques were observed, characteristic of the grazing resistance phenotype.