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. 2021 Sep 16;145(3):1098–1110. doi: 10.1093/brain/awab336

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© The Author(s) (2021). Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved. For permissions, please email: journals.permissions@oup.com

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Region of interest analyses. Group differences in ¹¹C-PBR28 signal in a priori regions of interest. A priori regions were selected as they demonstrated ¹¹C-PBR28 PET SUVR elevations in chronic low back pain patients compared to healthy controls.²¹ Average ± SD SUVR extracted showing differences between cLBP_RAD and cLBP_AX (adjusted for scanner and genotype). *Significant difference between groups (P < 0.05). Triangle denotes data from Protocol 1, circle denotes data from Protocol 2. The range of the y-axis is set depending on the distribution of individual data-points.