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Kaplan Qbank USMLE



Author6 Posts
  #1

radiation therapy destructs rapidly growing cells by:

a. cross-lingking of DNA

b. demethylation of DNA

c. cleavage of DNA double strands

d. distruption of DNA-RNA trancription complexes

e. distruption of purine rings in DNA


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  #2

C.. CLEAVAGE???


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  #3

"The exact mechanism of cell death due to radiation is still an area of active investigation. A large body of evidence supports double-stranded breaks of nuclear DNA as the most important cellular effect of radiation. This breakage leads to irreversible loss of the reproductive integrity of the cell and eventual cell death. "




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  #4

thank you

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  #5

Cool. Where did you find the explanation doc2378? Thanks

  #6

C is the ans..







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