Recovery of transferred NK cells from IL-15−/− and control (IL-15+/−) mice at days 1.5 and 5.
| Day and tissue . | IL-15−/− mice* . | IL-15+/−mice* . | P† . | No. . |
|---|---|---|---|---|
| Day 1.5 | ||||
| Spleen | 0.63 ± 0.18 | 4.74 ± 1.21 | .003 | 4 |
| Blood | 0.04 ± 0.02 | 0.19 ± 0.13 | .0006 | 4 |
| Liver | 0.35 ± 0.07 | 0.62 ± 0.16 | .01 | 4 |
| Day 5 | ||||
| Spleen | 0 | 4.06 ± 0.5 | .009 | 4 |
| Blood | 0 | 0.19 ± 0.02 | .01 | 4 |
| Liver | 0 | 0.21 ± 0.08 | .005 | 3 |
| Day and tissue . | IL-15−/− mice* . | IL-15+/−mice* . | P† . | No. . |
|---|---|---|---|---|
| Day 1.5 | ||||
| Spleen | 0.63 ± 0.18 | 4.74 ± 1.21 | .003 | 4 |
| Blood | 0.04 ± 0.02 | 0.19 ± 0.13 | .0006 | 4 |
| Liver | 0.35 ± 0.07 | 0.62 ± 0.16 | .01 | 4 |
| Day 5 | ||||
| Spleen | 0 | 4.06 ± 0.5 | .009 | 4 |
| Blood | 0 | 0.19 ± 0.02 | .01 | 4 |
| Liver | 0 | 0.21 ± 0.08 | .005 | 3 |
Values are the means ± SEM percentage of NK cells recovered from the original adoptive transfer.
The absolute numbers of recovered NK cells at each time point in IL-15−/− and IL-15+/− (control) mice were compared by using the Student t test. There were no significant differences between the percentages of NK cells recovered from the spleen, blood, or liver of control mice at 1.5 and 5 days.