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Table 2 Multiple MTT assay: Survival of irradiated cells (n = 8 for each experiment); n.d. = not determined

From: Determination of cell survival after irradiation via clonogenic assay versus multiple MTT Assay - A comparative study

  plating after irradiation plating before irradiation
A 549 2000 cells 4000 cells mean value S.D. 2000 cells 4000 cells mean value S.D.
0 Gy 100.0% 100.0% 100.0%   100.0% 100.0% 100.0%  
1 Gy 64.3% 63.0% 63.7% 0.9% 102.6 & 87.5% 95.0% 10.7%
2 Gy 73.4% 56.5% 65.0% 11.9% 102.5% 88.0% 95.3% 10.2%
4 Gy 28.6% 34.5% 31.6% 4.2% 65.6% 67.6% 66.7% 1.4%
6 Gy n.d. 45.9% 76.8% 61.4% 21.8%
8 Gy 3.2% 13.4% 8.3% 7.3% 27.6% 43.1% 35.3% 11.0%
15 Gy 0.0% 0.1% 0.1% 0.1% 26.3% 31.3% 28.8% 3.6%
LN 229 2500 cells 4000 cells Mean value S.D. 2500 cells 5000 cells Mean value S.D.
0 Gy 100.0% 100.0% 100.0%   100.0% 100.0% 100.0%  
1 Gy 83.2% 92.3% 87.7% 6.6% 81.9% 87.6% 84.8% 3.9%
2 Gy 62.4% 70.9% 66.7% 7.8% 87.7% 79.9% 83.8% 5.8%
4 Gy 43.0% 50.9% 47.0% 8.5% 63.6% 80.7% 72.2% 3.7%
6 Gy n.d. 30.4% 57.3% 43.9% 5.1%
8 Gy 27.6% 39.8% 33.7% 7.2% 27.1% 48.7% 37.9% 2.6%
15 Gy 15.0% 19.6% 17.3% 5.2% 12.4% 30.7% 21.6% 1.9%
F 98      2500 cells 4000 cells Mean value S.D.
0 Gy n.d. 100.0% 100.0% 100.0%  
1 Gy      93.7% 97.1% 95.4% 7.5%
4 Gy      69,7% 65.6% 67.6% 5.0%
6 Gy      46.2% 54.9% 50.6% 4.4%
8 Gy      28.7% 38.7% 33.7% 3.8%
15 Gy      6.9% 9.7% 8.4% 1.2%