Members of the OMWP project sampling Tintori wall painting replicas for the evaluation of invasive techniques. From left to right: Austin Nevin, the Courtauld Institute of Art; Fabio Morresi, the Scientific Laboratories of the Vatican Museums; Cristina Grandin, the Laboratorio per l'Affresco di Vainella; Elisa Campani, University of Parma; Gwänelle Gautier, University of Pisa; Monica Favaro, Istituto di Chimica Inorganica e delle Superfici; and Giancarlo Lanterna, Opificio delle Pietre Dure. Photo: Francesca Piqué.