本文报道了~(60)Coγ线照射对小鼠脾细胞 DNA、RNA 及蛋白质合成影响的实验研究。结果表明,小鼠脾细胞 DNA 合成在0.5戈瑞照射后即明显受到抑制,而 RNA、蛋白质的合成在2.5戈瑞照射后才受抑显著,表明 DNA 合成对电离辐射比 RNA、蛋白质合成更为敏感。γ线照射抑制这三种生物大分子合成的剂量-效应曲线均是多相形的。 This article reported the effect of ~(60)Co gamma radiation on the DNA, RNA and protein synthesis of mouse splenocytes. The results showed that the DNA synthesis of mouse spleen cells was significantly inhibited after 0.5 Gy irradiation, but the synthesis of RNA and protein was only inhibited after 2.5 Gy irradiation, indicating that DNA synthesis is more effective than ion RNA and protein synthesis in ionizing radiation. sensitive. The dose-response curves for the synthesis of the three biomolecules inhibited by gamma irradiation were all polyphase.