Dr. Frederickson 
September 18, 1978 
Page 2. 
I really congratulate those vrfio drew up these revised guidelines. 
They show enormous attention to detail and reason. I hope the revisions 
continue periodically, and perhaps in the near future they will be thrown 
out altogehter, and It will be possible to treat recombinant DNA research 
as just any other problem in medical microbiology. 
Si ncerely yours , 
Donald D. Brown, 
Director, Department of Embryology 
Carnegie Institution of Washington 
DD8:GS 
[A-165] 
