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During her 1954 visit to the United States, Franklin made many new contacts among the virus researchers all over the country. Alexander Rich was working on studies of TMV protein that closely paralleled Franklin's and they were in frequent communication during 1955. In this letter he gave her an update on his own work and noted that Robley Williams at the Berkeley virus lab had recently separated TMV protein from its RNA, with measurements of the latter very close to those obtained by Rich and his colleagues.
Original Repository:
Churchill Archives Centre. The Papers of Rosalind Franklin