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. 2022 Apr 4;12:5636. doi: 10.1038/s41598-022-09085-0

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© The Author(s) 2022

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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Analysis of the proteome of P. intermedia biofilm and planktonic cells. (A) SDS–PAGE gel showing protein bands from protein preparations: biofilm (lane 1) and planktonic cells (lane 2). (B) Western blot analysis of the secretome preparations (lane 1 = biofilm, lane 2 = planktonic) and the WCP (lane 3) using an antibody for the cytoplasmic marker protein FtsZ. (C) Protein sequences from LC–MS analysis of the secretome were analyzed by an in silico 2DE tool.