This is the final peer-reviewed accepted manuscript of: Elisa Boanini, Paola Torricelli, Carla Boga, Gabriele Micheletti, Maria Cristina Cassani, Milena Fini, and Adriana Bigi; “(9R)-9-Hydroxystearate-Functionalized Hydroxyapatite as Antiproliferative and Cytotoxic Agent toward Osteosarcoma Cells ” (2016) Langmuir 32: 188−194. doi.org/10.1021/acs.langmuir.5b03754 The final published version is available online at: https://pubs.acs.org/doi/10.1021/acs.langmuir.5b03754 Rights / License: The terms and conditions for the reuse of this version of the manuscript are specified in the publishing policy. For all terms of use and more information see the publisher's website. This item was downloaded from IRIS Università di Bologna ( https://cris.unibo.it/) When citing, please refer to the published version.