HARVARD UNIVERSITY 
DEPARTMENT OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 
BOARD OF TUTORS 
IN BIOCHEMICAL SCIENCES 
9 Kirkland Place 
Cambridge, Massachusetts 02138 
20 December 1979 
Dr. Donald F. Fredrickson, Director 
National Institutes of Health 
Building 1-124 
9000 Rockville Pike 
Bethesda, Maryland 20205 
Dear Dr. Fredrickson, 
I urge prompt enactment of the new recombinant DNA guidelines, 
proposed in the Federal Register Volume 44, No. 232 (November 30, 
1979, pp. 69210-69251). These new guidelines are critically impor- 
tant for research in Molecular Biology in this country. 
Yours sincerely 
Stephen C. Harrison 
Professor of Biochemistry 
SCH/jc 
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