The legend of Leonardo da Vinci is shrouded in mystery: How did he die? Are the remains buried in a French chateau really those of the Renaissance master? Was the “Mona Lisa” a self-portrait in disguise? A group of Italian scientists believes the key to solving those puzzles lies with the remains - and they say they are seeking permission from French authorities to dig up the body to conduct carbon and DNA testing. If the skull is intact, the scientists can go to the heart of a question that has fascinated scholars and the public for centuries: the identity of the “Mona Lisa.” Recreating a virtual and then physical reconstruction of Leonardo's face, they can compare it with the smiling face in the painting, experts involved in the project told The Associated Press. “We don't know what we'll find if the tomb is opened, we could even just find grains and dust,” says Giorgio Gruppioni, an anthropologist who is participating in the project. “But if the remains are well kept, they are a biological archive that registers events in a person's life, and sometimes in their death.” The leader of the group, Silvano Vinceti, told the AP that he plans to press his case with the French officials in charge of the purported burial site at Amboise Castle early next week. The group of 100 experts involved in the project, called the National Committee for Historical and Artistic Heritage, was created in 2003 with the aim of “solving the great enigmas of the past,” said Vinceti, who has written books on art and literature.