Data and Methods Information DOI 10.17863/CAM.4370 Notes (1) Ethics: We solely study cells in culture: In the main text sentence saying 'in vivo' this means 'in a living cell' (2) Computation: Stiffness maps, Gwyddion 2.40; Approach fits, Excel 2010. (3) Graphics: Inkscape 0.91. Contents (1) Force calculations (2) Fits to cell approaches (3) Scan data and stiffness maps Location The data and methods for this article are archived online by the University of Cambridge at https://www.repository.cam.ac.uk/handle/1810/260144