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STatiana [176]
3 years ago
9

Please help me and no file

Biology
2 answers:
mina [271]3 years ago
7 0
Can you explain a little more
Nadusha1986 [10]3 years ago
5 0

Answer:

There are several possible reasons for chemotherapy resistance: Some of the cells that are not killed by the chemotherapy mutate (change) and become resistant to the drug. Once they multiply, there may be more resistant cells than cells that are sensitive to the chemotherapy. Gene amplification.

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