The dispersion method does not affect the in vitro genotoxicity of multi-walled carbon nanotubes despite inducing surface alterations Burgum Michael J. Alcolea-Rodríguez Víctor Saarelainen Hanna Portela Raquel Reinosa Julián J. Fernández José F. Dumit Verónica I. Catalán Julia Universidad de Zaragoza Simeone Felice C. Faccani Lara Clift Martin J.D. Evans Stephen J. Bañares Miguel A. Doak Shareen H. 2025 research-article