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. 2020 Nov 25;19:1533033820973277. doi: 10.1177/1533033820973277

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© The Author(s) 2020

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 1. — The expression of DDR1, COL4A1, and MMP-2 in tissue samples. (A) The mRNA levels of DDR1, COL4A1, and MMP-2 in BC tissue and paired adjacent tissues determined by RT-PCR. (B) Representative images of immunohistochemistry staining of DDR1, COL4A1, and MMP-2 in BC and adjacent normal tissues. (C) Immunohistochemical staining quantification showed the expression levels of DDR1, COL4A1, and MMP-2 in BC tissues and adjacent tissues. *P < 0.05; **P < 0.01.