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This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
Normalized invasive properties of tested isolates vs. Tohama. At least three independent assays were done, each in duplicate. Results are normalized vs. Tohama. Statistical analysis were obtained using a t-test and results with p < 0.05 were considered significant (*).