Table 2.

Sources of serum samples from human patients

Serum	Source		Geographic origin	Reference
	Age (yr)	Sexa
S-1	58	M	GA, USA	Visvesvara et al. (1990) (19)
S-2	60	M	CA, USA	Deetz et al. (2003) (4)
S-3	7	F	CO, USA	Visvesvara (unpublished)
S-4	8	F	CA, USA	Visvesvara (unpublished)
S-5	60	M	NV, USA	Booton et al. (2003) (1)

^aF, female; M, male.