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. 2021 Nov 16;8:681172. doi: 10.3389/fmed.2021.681172

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Copyright © 2021 Qi, Tan, Yao, Yang and He.

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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Overview of the potential biomarkers of PsA found through proteomic technologies from four different kinds of biological samples: Biomarkers from synovial fluid and skin tissues are presented in the figure. No possible biomarkers are found from urine and serum. PsA, psoriatic arthritis; PEA, proximity extension assay.