RESEARCH 
ANIMALS IN 
MEDICINE 
National Heart and 
Lung Institute 
National Institutes of Health 
LOWELL T. HARMISON, Ph.D. 
Editor 
OCTOBER 2, 1973 
DHEW PUBLICATION NO. (NIH) 72-333 
U.S. DEPARTMENT OF 
HEALTH, EDUCATION, AND WELFARE 
Public Health Service 
National Institutes of Health 
