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. 2021 Jan 8;11:577129. doi: 10.3389/fimmu.2020.577129

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Copyright © 2021 Lu, Zheng, Wang, Xu, Xie, Yuan, Wang and Wu

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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Sizes and kinetics of treponemal burdens in blood and other organs. The T. pallidum burden, expressed as log₂ flaA copy number per μg mouse DNA, was evaluated in experimental animals (n = 5 or 6) using qPCR (A) Blood, (B) Heart, (C) Liver, (D) Spleen, (E) Kidney, (F) Testicle, (G) Brain. T. pallidum was not detected in mice injected with an equal amount of PBS and an uninfected rabbit testicular suspension.