MASSACHUSETTS INSTITUTE OF TECHNOLOGY cambkidce, Massachusetts 02Ji9 
Department of Biology Room 56-445 Tel. 617/253-7003 
May 28, 1982 
Dr. William Gartland 
Office of Recombinant DNA Activities 
NIAID - NIH 
Bethesda, MD 20205 
Dear Dr. Garl^md, 
I am writing to express my emphatic support for the proposed amendment to the 
NIH Guidelines prohibiting the use of molecular cloning for the development of 
biological weapons. Such technology would represent a significant escalation 
in the application of scientific advances for destruction, and 1 urge the RAC 
to take a strong and explicit stand agadnst it. 
Ethan Si 
Professor o^Biology 
hah 
cct Dr. Richard Novick 
[ 781 ) 
