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. 2024 May 23;81(1):233. doi: 10.1007/s00018-024-05269-1

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — Enumeration of circulating tumour cell (CTC) counts in (A) in all head and neck squamous cell carcinoma (HNSCC) patients based on their tumour stage. (B) in all HNSCC patients based on their nodal stage. (C) in all P16 positive oropharyngeal squamous cell carcinoma (OPSCC) patients based on their tumour stage. (D) in P16 positive OPSCC patients based on their nodal stage. (E) in other HNSCC patients based on their tumour stage. (F) in other HNSCC patients based on their nodal stage. P-values are based on a comparison to Poisson rates using generalized regression, ns p > 0.050, * p < 0.050, ** P < 0.010