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. 2019 Sep 18;7:254. doi: 10.1186/s40425-019-0731-9

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — PD-L1 and PD-L2 combination predicts good survival outcome in anti-PD-1 treated melanoma patients. Kaplan–Meier plots of a progression-free survival and b overall survival of anti-PD-1 treated melanoma patients based on combined L1/L2 transcript expression by RT-qPCR. Low and high statuses were defined using X-Tile cut point