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THE WEIZMANN INSTITUTE OF SCIENCE

November 25th, 1955

Dr.Joshua Lederberg
Department of Genetics
University of Wisconsin
MAD IS O N, Wis.

Dear Dr.Lederberg,

In connection with some experiments
necessitating an unequivocal identification of minute amounts
of serine, I would would be grateful to you if you would
be so kind as to send me by airmail a culture of your E.coli
K,}2 strain S serineless mutant.

 

Thanking you in advance,
Yours sincerely,
i

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Sara Sarid