Supplementary material: Microrheology of Cells with Magnetic Force Modulation Atomic Force Microscopy L. M. Rebˆ elo, J. S. de Sousa, J. Mendes Filho Departamento de F´ ısica, Universidade Federal do Cear´ a Caixa Postal 6030, 60455-760, Fortaleza, Cear´a, Brazil, J. Sch¨ape, H. Doschke, M. Radmacher Institut f¨ ur Biophysik, Universit¨ at Bremen Postfach 330440, D-28334 Bremen, Germany Electronic Supplementary Material (ESI) for Soft Matter This journal is © The Royal Society of Chemistry 2013