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. 2017 Mar 18;3(1):vex007. doi: 10.1093/ve/vex007

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© The Author 2017. Published by Oxford University Press.

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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Figure 6. — Impact of the two segment 4 mutations on pH-dependent, hemagglutinin-mediated membrane fusion. Four viral constructs were tested for their ability to induce fusion-mediated hemolysis when exposed to various acidic pH.