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. 2022 Apr 11;50(4):03000605221089799. doi: 10.1177/03000605221089799

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© The Author(s) 2022

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — Overall survival (OS) and disease-free survival (DFS) in relation to cyclooxygenase-2 (COX-2) expression levels in patients with esophageal squamous cell carcinoma. (a) OS and (b) DFS in patients with different COX-2 protein expression levels (0 = negative, 1 = low, 2 = high).