Definition of drug resistance - NCI Dictionary of Cancer Terms

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drug resistance

The failure of cancer cells, viruses, or bacteria to respond to a drug used to kill or weaken them. The cells, viruses, or bacteria may be resistant to the drug at the beginning of treatment, or may become resistant after being exposed to the drug.

Previous Definitions:	dronabinol, droperidol, drug, drug abuse, drug interaction
Next Definitions:	drug tolerance, dry orgasm, DSMB, DT388IL3 fusion protein, DTGM fusion protein