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. 2020 Aug 6;10:445. doi: 10.3389/fcimb.2020.00445

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Copyright © 2020 He, Luo, Yang, Song, Wei and Ma.

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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Detection of SARS-CoV-2 RNA of four types of samples (throat swab, nasal swab, sputum, and feces) and specific antibody of 20 patients on different dates.