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

答案:登入後查看
統計: A(25), B(61), C(42), D(23), E(0) #1104697

詳解 (共 4 筆)

#3606899
放射線照射後不同的培養環境會影響照射細胞...
(共 85 字,隱藏中)
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#4707089
其實D也錯HeLa cell劑量率由1....
(共 40 字,隱藏中)
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#3153331
細胞存活率:環境不佳>環境較佳
(共 20 字,隱藏中)
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#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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