Table 2. Characteristics of plasma and EPS samples tested for infectious XMRV and related retroviruses.

Patient*	RNase L genotype†	Sample	Times frozen	Amount tested by S+L− assay (µl)	Amount tested by marker rescue assay (µl)
VP29	AA	Plasma	1	100	100
VP35	AA	Plasma	1	100	100
VP124	GA	Plasma	1	100	100
VP234	AA	Plasma	1	100	100
		Plasma	2	80	80
VP432	AA	Plasma	2	100	100
VP830	GA	EPS	2	30	30
VP844	GG	EPS	2	50	50
		EPS	3	12	12
VP847	AA	EPS	2	30	30
		EPS	3	20	20
VP875	AA	EPS	2	50	50
		EPS	3	10	10
		Plasma	1	50	50
VP881	GA	EPS	2	30	30
VP882	GA	Plasma	1	50	50
VP888	AA	Plasma	1	50	50
VP897	AA	Plasma	1	50	50
VP898	AA	Plasma	1	50	50
VP918	AA	Plasma	1	50	50
VP922	AA	Plasma	1	50	50
VP924	GG	Plasma	1	50	50
VP926	AA	Plasma	1	100	100
VP931	AA	Plasma	1	100	100
VP934	AA	Plasma	1	100	100
VP935	AA	Plasma	1	100	100
VP949	AA	Plasma	1	100	100
VP950	AA	Plasma	1	100	100
VP964	GG	Plasma	1	100	100
VP967	AA	Plasma	1	100	100

^*Patient identifiers shown in bold indicate patients who had previously tested positive for XMRV. See Discussion for details.

^†Nucleotides at position 1385 of the RNase L coding regions of both patient alleles are shown. See Table 1 footnotes for additional details.