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HOFFMANN-LA ROCHE INC.

NUTLEY * NEW JERSEY 07110 * TELEPHONE (201) 235-5000 « (N.Y.C.) 695-1400

RESEARCH DIVISION

September 18, 1980

Dr. Joshua Lederberg
President

Rockefeller University
1230 York Avenue

New York, NY 10021

Dear Dr. Lederberg:

This will confirm my invitation to you to participate as an observer in the
United States-Japan workshop on biochemical epidemiology in cancer research
that will be held in Honolulu from February 10-12, 1981. The purpose of this
meeting is to stimulate informal interactions and discussion between
biochemists and epidemiologists and to explore the use of biochemical methods
that can help in the design and interpretation of cancer epidemiology studies.
An important aspect of this meeting is to ask whether biochemical measurements
can be helpful in identifying individuals in our population who have a high
cancer risk.

Enclosed is a list of the United States participants and a tentative list
of the Japanese participants who will be attending. These lists will give you
an idea of the scope of the meeting. I wish that we were able to provide funds
for your travel and lodging expenses, but we are not able to do this.

I hope that you will be able to participate in our meeting and that we can
get together sometime soon for further discussion on chemical carcinogenesis.

With warm personal regards:

Sincerely yours,
Allan H. Conney, Ph.D.

AHC/1jg
Enclosures