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. 2011 Feb 24;7(2):e1001301. doi: 10.1371/journal.ppat.1001301

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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A) Schematic of the Surface Plasmon resonance analysis strategy used to measure the reactivity of monomeric sCD4 (D1D2) and dodecameric sCD4 (D1D2-Igαtp). B–E) Sensorgrams depicting the binding kinetics of increasing concentrations of D1D2 or D1D2-Igαtp reacting with immobilized gp120s, the identities of which are noted in each panel. Each ligand/analyte pair is listed and overall affinity is reported as K_D (where applicable). These results are representative of three independent experiments using independently coupled gp120 biosensor surfaces.

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