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. 2020 Dec 17;11:605338. doi: 10.3389/fimmu.2020.605338

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Copyright © 2020 Barreto-Duarte, Sterling, Fiske, Almeida, Nochowicz, Smith, Barnett, Warren, Blackman, Lapa e Silva, Andrade and Kalams

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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T-regulatory cell frequency and phenotype. Scatter plots depicting the Treg frequency (A) in U.S. study population (B) in Brazilian study population. Frequency of Treg CD39+ (C) in U.S. study population (D) in Brazilian study population. Lines represent median values and interquartile ranges (IQR). The differences in median values (and IQR) between groups were compared using the Kruskal-Wallis test with Dunn’s multiple comparisons post-test. TB, tuberculosis; PTB, pulmonary tuberculosis; EPTB, extrapulmonary tuberculosis; TST, tuberculin skin test; CFP, Culture filtrate protein; ESAT, early secretory antigen of tuberculosis; gRV, γ-irradiated M. tuberculosis.