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Table 2 CD34-derived CD56+ cells inhibited K562 proliferation

From: CD34+ cells cultured in stem cell factor and interleukin-2 generate CD56+ cells with antiproliferative effects on tumor cell lines

  3H-TdR (CPM)  
  ImmatureCD56+ cells + K562 K562 only % proliferation inhibition
1 214 6183.5 96.5
2 267 6183.5 95.7
3 8183 11172 27
4 1805 5283 66
5 1944.5 4720 59
6 743 11232 93.4
7 2708 10323 74
8 355 2524 86
9 138 2524 94.6
10 829 7336 89
Mean ± SD 1718.7 ± 2433.5 6748.1 ± 3255.5 78 ± 22.2
  1. Electronically or magnetically sorted CD34-derived CD56+ cells and incubated 10:1 ratio with K562 and cell proliferation was evaluated after 2-day culture. The difference in the mean CPM incorporation between immature CD56+cells+K562 and K562 alone was highly significant with a P value of 0.0011. The range of CPM incorporation in the presence of immature CD56+ cells and K562 was 138–8103 while in the presence of K562 alone was 2524–11232.