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. 2020 Jun 28;21(13):4592. doi: 10.3390/ijms21134592

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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PA20 adhesion to cultured HEp-2 cells. (A) The effect of fliC and 20 mM sodium butyrate on PA20 adhesion to HEp-2 cells. (B) The role of fliC in pchE-induced repression of PA20 adhesion to HEp-2 cells. The calculated mean percentage values (and 95% confidence levels) of the adhered strains were determined following 3 h exposure to HEp-2 cells in EMEM at 37 °C in 5% CO₂. Three independent samples (A) and four independent samples (B) were tested in two separate trials. Any two treatment means with no letter in common are significantly different (p < 0.05).