UNITED STATES DISTRICT COURT FOR THE DISTRICT OF COLUMBIA 
FERDINAND J. MACK, JR., 
and infact. 
Plaintiff 
v. 
JOSEPH A. CALIFANO, JR., : 
ET AL., 
Defendants : 
FILED- 
JAN 1 2 1978 
JAMES E. DAVEY, Clerk 
Civil Action No. 
AFFIDAVIT IN SUPPORT OF MOTION 
FOR TEMPORARY RESTRAINING ORDER 
1. I, John C. Cobb, have a ~„ctor of Medicine degree from 
Harvard Medical School and a Master of Public Health degree from 
Johns Hopkins School of Hygiene. I am a Professor in the Department 
of Preventive Medicine and Comprehensive Health Care at the University 
of Colorado and have held this position for twelve years. I was 
Chairman of this Department for six years. 
2. I have read and am familiar with a document entitled 
/ __ 
Proposed Experiments on the Biological Properties of Polyoma 
Recombinant DNA Cloned in Bacterial Cells, by Martin and Rowe (the 
"Protocol"), for the conduct of experiments in Building 550 at Ft. 
Detrick, Maryland. 
3. According to the introductory paragraphs of the protocol, 
the proposed experiments are designed to provide information about 
the "potential benefits and biohazards associated with the production 
of recombinant DNA molecules." The protocol states the concern on 
p.2, "...that a negative result may be misinterpreted as indicating 
that there , is little biohazard in DNA recombinant work..." The impli- 
cation is clear that a positive result would properly be interpreted 
as indicating that there is a definite biohazard, but a negative 
result would not rule it out. 
[Appendix C — 139] 
