October 2h, 1962

Dr. Charlotte Auerbach
institute of Animal Genetics
University of Edinburgh

W. Mains Road

Edinburgh 9, Scotland

Dear

May {| ask for any information, references or reprints
you may be able to furnish on the following subject:

Does the Incorporation of 5-BromoUraci! have any
pérceptible mataganic or teratogenic effect in
manmalian material?

Much appreciated.

Sincerely,

Joshua Lederberg

JL: edf