The Shroud of Turin cloth that supposedly wrapped Jesus's body after the crucifixion and became imprinted with his image, has intrigued millions of believers and sceptics alike.
The herringbone woven cloth measuring 1.21m by 4.42m (4ftx14ft), is stained with human blood and appears to show the imprint of a crucified man.
At the time, a 30 year-old Ph D student at the Swiss Federal Institute of Technology in Zurich, he now heads up the university's ion beam physics laboratory, and believes that the mystery was solved back then. If you'd had human contamination then you would have seen a difference between the different degrees of cleaning we did." But there was no difference, he says.
On the question of cotton repairs, he is sure that the textile experts would have picked up any discrepancy in material.
"I don't doubt that the sample has the same structure as the rest of the shroud.
So much effort was put into the sample taking procedure." In short, he is convinced that the object dates from the 14th Century.