Table 1. Study Cohort.

Sample type	Total (n)	Multimer		ELISpot		Both
		yes	no	yes	no
WB	16	9	7	13	3	6
WBM	58	58	0	0	58	0
A	157	52	105	146	10	41
G	89	39	50	84	5	33
all	320	158	162	243	76	80

Number of samples analyzed by multimer staining and ELISpot according to sample type, w/o excluded samples (168 donors).

Sample sources: (A) apheresis tubing set, (G) graft, (WB) whole blood, (WBM) mobilized whole blood on day of apheresis.