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. 2021 Sep 17;12:717483. doi: 10.3389/fimmu.2021.717483

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Copyright © 2021 Zhang, Ding, Wang, Yin, Zhang and Yang

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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CXCR2 expression in trophoblast of human placental villous tissues. Paraffin-embedded tissue sections were double-stained for immunofluorescence. (A) The CK7-labeled trophoblast cells are indicated by red signals. (B) The CXCR2 protein is indicated by green signals. (C) The DAPI-stained nuclei are indicated by blue signals. (D) CXCR2 was expressed in CK7-labeled trophoblast cells and strongly indicated the colocalization of CK7 and CXCR2. CK7, cytokeratin 7; CXCR2, C-X-C motif chemokine receptor 2; DAPI, 4′-6-diamidino-2-phenylindole.