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. 2021 Nov 3;11:660318. doi: 10.3389/fonc.2021.660318

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Copyright © 2021 Kuncman, Orzechowska, Kuncman, Kordek and Taran

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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The multiple correspondence analysis (MCA) revealed divergent levels of estrogen receptor (ER), progesterone receptor (PR), HER2, Ki-67, Bcl-2, cyclin D1, E-cadherin, GCDFP-15, Snail+Slug, PD-L1, and PRL-3 expression between primary tumors (PTs) (n = 37) and synchronous axillary lymph node (ALN) metastases (n = 15).