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用同位素示踪法检测小鼠杂交瘤细胞是否处于细胞周期的 $\mathrm{S}$ 期, 放射性同位素最适合标 记在

Gaokao · Biology · previous-year question

  1. A.胞嘧啶
  2. B.胸腺嘧啶
  3. C.腺嘌呤
  4. D.鸟嘌呤

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