Reconstructing the history of frescoes with proteins

Ansa paper - http://www.ansa.it/canale_scienza_tecnica/notizie/tecnologie/2018/04/12/le-proteine-animali-aiutano-a-ricostruire-la-storia-dei-dipinti-_5ae217ca-3a31-4c32-9800-453d22bb7891.html