Multidrug resistance in tumor cells is
A) due to the action of a membrane pump that transports small molecules out of the cells.
B) the development of resistance to several drugs following an initial resistance to a single drug.
C) caused by a mutation in the cystic fibrosis gene.
D) due to the action of a membrane pump that transports small molecules out of the cells and the development of resistance to several drugs following an initial resistance to a single drug.
E) All of the answers are correct.
Correct Answer:
Verified
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