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. 2019 Dec 17;9:19242. doi: 10.1038/s41598-019-55805-4

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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SPR analysis of the kinetics of Ab-antigen interactions. SPR sensorgrams are shown for 6C407 binding to the 12 amino acid peptide antigen (a) and 3D8 binding to the ss-(dN)₄₀ oligonucleotide antigen (b). At least five concentrations of each Ab were injected over the biotinylated antigen immobilized on a streptavidin sensor chip. Experimental data were plotted together with curves drawn from a fitted 1:2 Langmuir isotherm. Colored and black lines indicate recorded and calculated curves, respectively. RU, resonance unit.