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. 2021 Jan 7;18:4. doi: 10.1186/s12014-020-09309-3

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© The Author(s) 2021

Open AccessThis 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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Identification of proteins in biospecimens from an ovarian cancer patient. The proteins identified by mass spectrometry in the tumor tissue extract, Pap test fluid, and cervical swab from an ovarian cancer patient were compared. The Venn diagram shows the intersection of proteins identified in each biospecimen; 2293 proteins were found in all three biospecimens from a total of 4934 proteins identified. The proteins identified in each sample are listed in Additional files 1 and 2