| MDR | multidrug resistance |
| P-gp | P-170 glycoprotein |
| BCRP | Breast Cancer Resistance Protein |
| CSC | Cancer Stem Cells |
| ADR | Adriamycin |
| TPT | Topotecan |
| ●NO | nitric oxide |
| NCX4040 | 2-(acetyl)benzoic acid 4-(nitroxymethyl) phenylester |
| GSNO | S-nitroso glutathione |
| MS | molsidomine |
| SIN-1 | linsidomine |