Members of the OMWP project sampling Tintori wall painting replicas for the evaluation of invasive techniques. From left to right: Austin Nevin (Courtauld Institute of Art, London), Fabio Morresi (Scientific Laboratories of the Vatican Museums, Rome), Cristina Grandin (Laboratorio per l'Affresco di Vainella, Prato); Elisa Campani (UniPr, Parma); Gwänelle Gautier (UniPI, Pisa); Monica Favaro (ICIS, Padova); Giancarlo Lanterna (OPD, Florence). Photo: F. Piqué.