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. 2018 Jul 11;9:1598. doi: 10.3389/fimmu.2018.01598

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Copyright © 2018 Heeren, van Dijk, Berry, Khelil, Ferns, Kole, Musters, Thijssen, Mom, Kenter, Bleeker, de Gruijl and Jordanova.

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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Survival analysis according to indoleamine 2,3-dioxygenase (IDO) expression in cervical cancer. Kaplan–Meier 5-year survival curve shows (A) disease-free survival (DFS) and (B) disease-specific survival (DSS) for patients with IDO-positive primary tumors (PT IDO+, black line) and IDO-negative (PTs IDO−, gray line). Kaplan–Meier 5-year survival curves show (C) DFS and (D) DSS for patients with patchy IDO expression (black dotted line), for patients with marginal, including patchy + marginal, IDO expression (gray dotted line) by PT cells. P values were calculated between the different groups using the log-rank test. NB: for some patients, DFS and DSS data are missing due to loss of follow-up.