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. 2021 Mar 11;12:635677. doi: 10.3389/fimmu.2021.635677

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Copyright © 2021 Li, Wang, Chen, Sun, Du, Wang, Ding, Jia, Wang and Zhang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Purification of SARS-CoV-2 RBD protein. Analytical gel filtration profile of SARS-CoV-2 RBD protein with HisTrap^TM excel. The 280-nm absorbance curve was shown. SDS-PAGE migration profiles of the sample purified was shown.