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. 2023 Jan 6;32(3):394–400. doi: 10.1177/09612033221151012

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© The Author(s) 2023

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Figure 2. — Trajectory of humoral response in SLE patients. Legend: Anti-trimeric Spike IgG levels at T0 (before vaccination); T1 (28 days after the first vaccination cycle); T2 (6 months after first vaccination cycle); T3 (180 days after the third dose) are shown. Statistical differences between median IgG levels at different time-points were calculated by Wilcoxon signed-rank test.