24 下列有關放射傷害修補之描述,何者錯誤?
(A)相同 X 光劑量分兩次照射,間隔 2 小時,其存活率較單次照射高,是因 sublethal damage repair
(B) X 光照射後,生長環境較佳的細胞比環境不佳的細胞存活率高,是因 potential lethal damage repair
(C)採用中子治療,sublethal damage repair 及 potential lethal damage repair 都不明顯
(D) X 光照射劑量率從 1Gy/min 降至 0.3 Gy/h,則細胞存活率上升
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統計: A(25), B(61), C(42), D(23), E(0) #1104697
統計: A(25), B(61), C(42), D(23), E(0) #1104697
詳解 (共 4 筆)
#3459979
<說明>
There is general agreement that PLD isnrepaired and the fraction of cell surviving a given dose of x-rays enhanced ifnpost-irradiation conditions are suboptimal for growth, so that cells do notnhave attempt the complex process of mitosis while their chromosomes arendamaged. If mitosis is delayed by suboptimal growth conditions, DNA damage cannbe repaired.
<出處>
輻射生物學p.64-67
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