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. 2019 Jun 14;19:585. doi: 10.1186/s12885-019-5818-7

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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. 1 — PRAF2 is highly expressed in ESCC tissues. a Expression of PRAF2 in ESCC tissues compared to normal tissues using TCGA samples. b qPCR analysis of PRAF2 mRNA expression in 77 paired ESCC tissues and their adjacent non-tumor tissues. PRAF2 levels were normalized to GAPDH expression. c Patients with ESCC were divided into two groups according to their PRAF2 expression profiles. e, f Correlation of PRAF2 mRNA expression with differentiation grade and TNM stage. ** P < 0.01