Table 2. Plating efficiency following drug treatment.
| Compound | Relative inhibitiona | % dead cells | Plating efficiency (%) |
| untreated | 4.4 | 95 | |
| camptothecin | 76.9 | 29.5 | 68 |
| etoposide | 65.5 | 23.6 | 23 |
| THQ4G | 69.6 | 20.8 | 8 |
| quercetin | 69.3 | 19.8 | 53 |
| PGD2 | 69.9 | 25.7 | 28 |
| pentamidine | 25.5 | 10.9 | 0.4 |
| pentamidine | 75.8 | 51.9 | <0.02b |
a
Average decrease in number of live cells as compared to untreated cultures, in multiple plating experiments.
b
Plating 200 live cells per well (24 wells per experiment) gave rise to no colonies. This number (0.02) assumes the next well would have given rise to a colony.