Most historians believe Lisa del Giocondo sat for da Vinci. She became a nun after her husband's death, and was buried beneath the convent in Florence.
Last year, archeologists found a female-sized skull in the crypt, and this week a skeleton. The bones' DNA will be compared with that from Lisa's children, and if that's a match, scientists will use reconstruction techniques on the skull to see if the face matches that of Mona Lisa.
