E. I. GOLDSMITH 
321 
SUMMARY 
Nonhuman primate animals have been in- 
creasingly productive laboratory animal models 
since problems of supply, quarantine, housing, 
husbandry, handling, tranquilization and anes- 
thesia have been overcome. 
Surgical experience with five species of pri- 
mates has been described and the present use- 
fulness and availability of various species has 
been summarized. 
The cost of a laboratory animal model should 
include considerations of "applicability to man" 
as well as the dollar outlay for purchase, experi- 
mentation, and maintenance. When this is done, 
the "cost effectiveness" of the primate model 
often makes it competitive with other animal 
models particularly for long-term studies. 
As "surrogates for man" in biomedical ex- 
perimentation, nonhuman primates are the most 
logical choices for sophisticated studies. They 
should be used widely with due regard for their 
potentially endangered status. 
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DISCUSSION 
Chairman Michael P. Kaye: Thank you 
very much. Dr. Goldsmith. Are there any ques- 
tions on this most interesting paper? 
Nicholas T. Werthessen, Brown Univer- 
sity : I want to congratulate the speaker on his 
