Esther M. Zimmer Lederberg to François Jacob
Maleness Transferred by Infection at High Frequency
January 12, 1961
Joshua Lederberg is well-known for his work in discovering
microbial sexuality (Nobel Prize, 1958). However, Esther M.
Lederberg discovered and named the Fertility Factor F, the
first episome discovered, by which microbial sexual
differentiation (maleness) may be conferred via phage infection.
See the letter below.
 1-12-61 59-61.jpg)
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