3061 Emerson Street 
Palo Alto, CA 94306 
December 13, 1979 
Dr. Donald Fredrickson 
Director 
National Institutes of Health 
Bethesda, Maryland 20205 
Dear Dr. Fredrickson: 
I fully support the amendment that E. coli K-12 be 
exempt from the NIH Guidelines for Recombinant DNA research 
and that PI containment would be sufficient. 
Sincerely 
Postdoctoral Fellow 
[ 469 ] 
