Robley Williams was one of many virus researchers that Franklin visited during her 1954 trip to the United States. He had written to her about her recent article on the probable structural configuration of TMV, as revealed by x-ray diffraction studies, and mused about the differences between her data and those found by he and his colleagues via different methods; they continued to brainstorm about this in a series of letters. In 1955, Williams and Fraenkel-Conrat found that they could break TMV into RNA and protein components, then reconstitute them into a new virus, some of which was infective. In this letter, Franklin offered to take x-ray diffraction photos of the reconstituted TMV.
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