Table 1.

Frequency of CD8+ responders to EBV antigen stimulation

LCL-responsiveLMP2 pept-responsiveBMLF1 pept-responsive
Healthy donorsSpots/106 CD8+cells (Mean ± SD)*% of CD8+ populationEstimated Spots/106PBMCSpots/106 PBMC (Mean ± SD)% of LCL-resp CD8+ cellsSpots/106PBMC (Mean ± SD)
EBV(+ve) HLA-A2 
 ES 954 ± 133 0.1 180 (18.9 ± 0.1%) 27 ± 7 15.0 943 ± 154 
 TF 4 855 ± 1406 0.5 730 (15 ± 0.1%) 11 ± 2 1.5 213 ± 41 
 NE 2 317 ± 145 0.2 199 (8.6 ± 0.4%) 12 ± 1 5.8 138 ± 27 
 TZ 16 655 ± 2539 1.7 1577 (9.5 ± 0.5%) 3 ± 0 0.2 57 ± 10 
 FT 37 830 ± 789 3.8 6545 (17.3 ± 1.8%) 25 ± 1 0.4 641 ± 165 
 SB 3 721 ± 615 0.4 522 (14.0 ± 0.0%) 63 ± 6 12.1 262 ± 12 
 AL 13 756 ± 2170 1.4 2553 (18.6 ± 1.2%) 52 ± 4 2.1 126 ± 30 
 MS 4 565 ± 1322 0.5 607 (13.3 ± 0.6%) 33 ± 6 5.5 174 ± 36 
 TO 17 705 ± 3514 1.8 2540 (14.3 ± 3.2%) 32 ± 11 1.3 161 ± 35 
 PG 8 015 ± 733 0.8 560 (7.0 ± 1.4%) 20 ± 0 3.6 13 ± 0 
 GA 20 961 ± 1472 2.1 2748 (13.1 ± 0.1%) 83 ± 28 3.0 306 ± 36 
 Average    33 4.6 276 
EBV(+ve) non-A2 
 JR 10 197 ± 952 1.0 1977 (19.4 ± 0.6%) 3 ± 1 0.1 0 ± 1 
 ST 33 822 ± 1616 3.4 3485 (10.3 ± 0.0%) 1 ± 1 0.0 0 ± 0 
 Average 13 489 1.3 1863 0.1 
EBV(−ve) 
 PB 813 ± 67 0.1 71 (8.7 ± 0.7%) 
 KR 680 ± 103 0.1 102 (14.9 ± 0.1%) 
 DM 1231 ± 165 0.1 241 (19.6 ± 2.2%) 
 Average 908 
LCL-responsiveLMP2 pept-responsiveBMLF1 pept-responsive
Healthy donorsSpots/106 CD8+cells (Mean ± SD)*% of CD8+ populationEstimated Spots/106PBMCSpots/106 PBMC (Mean ± SD)% of LCL-resp CD8+ cellsSpots/106PBMC (Mean ± SD)
EBV(+ve) HLA-A2 
 ES 954 ± 133 0.1 180 (18.9 ± 0.1%) 27 ± 7 15.0 943 ± 154 
 TF 4 855 ± 1406 0.5 730 (15 ± 0.1%) 11 ± 2 1.5 213 ± 41 
 NE 2 317 ± 145 0.2 199 (8.6 ± 0.4%) 12 ± 1 5.8 138 ± 27 
 TZ 16 655 ± 2539 1.7 1577 (9.5 ± 0.5%) 3 ± 0 0.2 57 ± 10 
 FT 37 830 ± 789 3.8 6545 (17.3 ± 1.8%) 25 ± 1 0.4 641 ± 165 
 SB 3 721 ± 615 0.4 522 (14.0 ± 0.0%) 63 ± 6 12.1 262 ± 12 
 AL 13 756 ± 2170 1.4 2553 (18.6 ± 1.2%) 52 ± 4 2.1 126 ± 30 
 MS 4 565 ± 1322 0.5 607 (13.3 ± 0.6%) 33 ± 6 5.5 174 ± 36 
 TO 17 705 ± 3514 1.8 2540 (14.3 ± 3.2%) 32 ± 11 1.3 161 ± 35 
 PG 8 015 ± 733 0.8 560 (7.0 ± 1.4%) 20 ± 0 3.6 13 ± 0 
 GA 20 961 ± 1472 2.1 2748 (13.1 ± 0.1%) 83 ± 28 3.0 306 ± 36 
 Average    33 4.6 276 
EBV(+ve) non-A2 
 JR 10 197 ± 952 1.0 1977 (19.4 ± 0.6%) 3 ± 1 0.1 0 ± 1 
 ST 33 822 ± 1616 3.4 3485 (10.3 ± 0.0%) 1 ± 1 0.0 0 ± 0 
 Average 13 489 1.3 1863 0.1 
EBV(−ve) 
 PB 813 ± 67 0.1 71 (8.7 ± 0.7%) 
 KR 680 ± 103 0.1 102 (14.9 ± 0.1%) 
 DM 1231 ± 165 0.1 241 (19.6 ± 2.2%) 
 Average 908 
*

The mean and standard deviations are derived from results on two separate experiments; the results from each experiment represent the average of triplicate wells (or more than 12 wells in the case of LMP2 peptide-responsive CD8+ cells) with the same number of responders per well.

The frequency of LCL-responsive CD8+ cells is also presented as the number of spots/106 PBMC for comparison with peptide-responsive CD8+ cells. This is estimated by: (number of spots/106 CD8+ cells) × (% of CD8+ cells among PBMC). The percentage of CD8+cells among PBMC is obtained by positive selection of CD8+cells with Dynal-beads. The mean and standard deviation of 2 CD8+ cell selection are presented in parentheses.

This average is derived from both HLA-A2 and non HLA-A2 EBV (+ve) donors.

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