Non-helical models of DNA structure the top of this article, or there could be an equal number of right-handed and left-handed twists, as in the Rodley structure below. The abbreviation "TN", to be used to refer to any DNA structure whose strands are topologically non-linked, has been proposed. The double-helix model of DNA structure was first published in the journal "Nature" by James D. Watson and Francis Crick in 1953 with further details in 1954.) Their work was based upon the crucial X-ray diffraction image of DNA - labeled as "Photo 51" - from Rosalind Franklin in 1952, followed by her more highly clarified DNA
Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid autobiographical account of the discovery of the double-helical, molecular structure of DNA called "The Double Helix", which was not publicly accepted either by Crick or Wilkins. Furthermore, Erwin Chargaff also printed a rather "unsympathetic review" of Watson's book in the March 29, 1968 issue of "Science". In the book, Watson stated among other things that he and Crick had access to some of Franklin's data from a source that she was not aware of, and also that he had seen—without her permission—the B-DNA X-ray diffraction pattern obtained by Franklin and Gosling in May 1952 at King's in London. In particular,