3860 Magnolia Drive 
Palo Alto, CA 94306 
December 13, 1979 
Dr. Donald Fredrickson 
Director 
National Institutes of Health 
Bethesda , Maryland 20205 
Dear Dr. Fredrickson: 
As an animal virologist, I wish to make known to you 
my approval of the Campbel 1 -Rowe proposal that most cloning 
in E. col i K-12 be exempt from the NIH Guidelines. 
Yours truly, 
Patricia Marion, Ph.D. 
Postdoctoral Fellow 
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