Accepted Manuscript Title: Natural joints: Boundary lubrication and antiphospholipid syndrome (APS) Authors: Zenon Pawlak, Aleksandra Mrela, Mariusz Kaczmarek, Mieczyslaw Cieszko, Wieslaw Urbaniak PII: S0303-2647(18)30331-9 DOI: https://doi.org/10.1016/j.biosystems.2018.10.018 Reference: BIO 3910 To appear in: BioSystems Received date: 1-9-2018 Accepted date: 29-10-2018 Please cite this article as: Pawlak Z, Mrela A, Kaczmarek M, Cieszko M, Urbaniak W, Natural joints: Boundary lubrication and antiphospholipid syndrome (APS), BioSystems (2018), https://doi.org/10.1016/j.biosystems.2018.10.018 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.