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ORIGINAL RESEARCH
Expression of chemokine receptors CXCR4 and CXCR7 in EpCAM-positive and EpCAM-negative CTCs in breast cancer
1 Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
2 Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russia
per. Kooperativny, 5, Tomsk, 634009, Russia; moc.liamg@se.aveyrogirg
Funding: the study was supported by the Russian Science Foundation (grant No. 23-15-00135).
Author contribution: Grigorieva ES, Savelieva OE, Zavyalova MV — data collection and analysis; Grigorieva ES, Tashireva LA — writing and editing; Perelmuter VM — research supervision; Cherdyntseva NV — project funding.
Compliance with ethical standards: the study was approved by the Local Ethics Committee of Tomsk National Research Medical Center (17 June 2016, the approval No. 8) and complied with the Declaration of Helsinki. All participants gave written informed consent.