The origins and genetic content of the Shroud of Turin have long been disputed by experts and history enthusiasts. A new study of DNA traces on the shroud suggests that confirming the presence of anyone, let alone Jesus, might be near impossible. The study, led by Gianni Barcaccia of the University of Padova in Italy, found a diverse array of medieval and modern DNA, belonging to humans, animals, and plants. The findings follow a previous study suggesting that the shroud was manufactured in India. The shroud's first historical appearance came from a 1389 document, and it has since undergone multiple changes in ownership before landing at Turin, Italy. However, direct investigations into the shroud have been limited as papal authorities are reluctant to offer up any more samples.