Table 1. Distribution statistics of baboons by study.

			Animal Number (n)
			Relative T cells	Absolute T cells
		AGE
A. Animal Distribution for effects of age on lymphocytes	Young-adult	>13 years	14	12
	Middle-aged	13–17 years	14	12
	Aged	<17 years	10	9
			38 Total;	33 Total;
			(33 Female; 5 Male)	(28 Female; 5 Male)
	Peer Group	Group 1	9	8
		Group 2	8	8
		Group 3	12	11
		Group 4	9	6
B. Relationship of other factors to lymphocytes			34–35	28–30
C. Social Status Distribution	Total High Social Status		15	15
	Total Subordinate		20	15
	Female High Social Status		10 (serum cortisol)
	Female Subordinate		20 (serum cortisol)

The population analysis was completed on normal adult baboons housed in hierarchical peer groups at the National Baboon Research Resource, Department of Comparative Medicine, University of Oklahoma Health Sciences Center. Male and female baboons were group-housed in large outdoor corrals (with attached indoor group cages). All blood samples were collected during routine health checks.