Photographs of Watanabe, Tsutomu

As with Joshua Lederberg, Tsutomu Watanabe was a student of Francis Ryan (the contributions of both Francis Ryan and Tsutomu Watanabe were not forgotten by Joshua Lederberg, as it is pointed in Joshua Lederberg's vetted NLM website that out that neither counted as being of any importance in bacterial genetics).

Esther M. Zimmer Lederberg did plasmid and other aspects of the genetics of various strains of Escherichia coli including K-12. However, Esther M. Zimmer Lederberg also did genetic research of Salmonella typhimurium including research collaboration with such people as B. A. D. Stocker and S. Cohen (see Esther M. Zimmer Lederberg's published papers). Other researchers who Esther M. Zimmer knew well who specialized in similar investigations included the following:

Relevant papers with their references include the following:

  1. Watanabe, Tsutomu; Ushiba, Daizo; Lederberg, Joshua
         Lederberg, Esther M. Zimmer; Iino, Tetsuo
         Keio University, Tokyo: May 10, 1962
  2. .
  3. Watanabe, Tsutomu; Lederberg, J.; Ushiba, Daizo: 1962

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