1. PURPLE SPOTS ON ANCIENT PARCHMENTS VS RED HEATS ON PRESENT-DAY LEATHERS: THE UNVEILED SECRET OF THE SALT-CURED HIDES. Authors: NICOLETTA PERINI, FULVIO MERCURI, SILVIA ORLANDUCCI, MARIA CRISTINA THALLER, ALESSANDRO RUBECHINI, DOMENICO CASTIELLO, VALERIO TALARICO, LUCIANA MIGLIORE.