UNIVERSITY of PENNSYLVANIA 
PHILADELPHIA 19104 
The School of Veterinary Medicine 
September 28, 1984 
Dr. Stanley Barban 
Scientist Administrator 
Office of Recombinant DNA Activities 
National Institute of Allergy and 
Infectious Diseases 
Department of Health & Human Services 
Public Health Service 
National Institutes of Health 
Building 31, Room 3B10 
Bethesda, Maryland 20205 
Dear Stan: 
Enclosed is a letter Richard Palmiter and I have prepared 
in response to Jeremy Rifkin's proposed amendment to the 
NIH guidelines for recombinant DNA experimentation. I hope 
you will find it helpful. 
If you have any questions or would like additional comments, 
please let me know. 
With best wishes. 
Sincerely yours, 
R. L. pnnster 
Richard King Mellon Professor 
L. \B 
of Reproductive Physiology 
RLB/cep 
Enclosure 
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