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Francois Jacob, in Lwoff's service of the Institut Pasteur, would like cultures of the P. fluoresens mutants that you
made. I lost my transfers on my travels, so could you send him some lyophilized tubes? Thanks.
I had a wonderful time in Europe, mostly [...], although I learned a lot and had time to think profitably about scientific
problems. Am now all set to go on new [...] principally adaptive physiology of Rhodosparillum [. . .] (pigment synthesis)
and intracellular structure (hunt for bacterial mitochondria [...] thereof).