Rosalind Franklin is best known for her role in discovery of the the structure of DNA and for pioneering use on x-ray diffraction. According to John Desmond Bernal "Her photographs were among the most beautiful x-ray photographs of any substance ever taken." Sadly though, Maurice Wilkins and James Wastson used her finding's, without her knowing, as a basis for the famous DNA Model. Which this model landed them the Nobel Prize in 1962. Franklin left Kings College and promised not to work on DNA again so, she began working with RNA and later laid the foundation for structural virology.