| (I) Drug | (J) Drug | Mean difference (I-J) (% of cell growth) | Significance |
| P-50 μM | Combined | 32.059 | <0.001 |
| Ru-50 μM | 13.904 | 0.001 | |
| Combined | P-50 μM | −32.059 | <0.001 |
| Ru-50 μM | −18.154 | <0.001 | |
| Ru-50 μM | P-50 μM | −13.904 | 0.001 |
| Combined | 18.154 | <0.001 |