Page 2 
Dr* Donald Fredrickson 
October 23 , 1979 
frequent reaction of scientists who have built the P2-P3 facilities: they 
believe that others should also go through that waste and trouble* Roy's 
motivation is questionable, especially since he has a stake In hts special 
EK2 strains* 
I sttongly disagree with both of his closing sentences* I believe that 
the exemption is overdue and based on objective scientific evidence, Including 
Curtiss* 1977 letter to you* His statement that the RAC recommendation was 
"based more on the politics" is insulting. Incorrect, and seems to be based 
on some emottonal reasons and not on scientific facts* 
There Is another reason for the approval of the RAC recommendation, not 
considered earlier and outlined In my letter to Jane Setlow (enclosed)* Since 
the recombinant DNA technique has an Inherent "early warntng" system, there 
is no reason for any regulations, until some first confirmed early warnings 
should materialize* Therefore, I advise you as a well-informed citizen and 
former member of RAC, and recommend strongly to approve the Rowe-Campbel 1 RAC 
proposal as soon as possible* 
With the warmest personal regards. 
Sincerely yours, 
Waclaw Szybalski 
Professor of Oncology 
WS/bk 
