慢照射辐射损伤小，突变频率高，有益突变多。
The chronic irradiation was minor in injury and higher in frequencies of beneficial variation.
而其他两试验组与对照组间突变频率在3%左右。
The frequency of mutation is about 3% between other testing group and comparison of group.
统计结果表明，形态性状的突变频率为5.1%。
The statistic analysis indicated that the mutation frequency of morphological character was 5.1%.
个体的辐射敏感性较高者，GPA基因突变频率较高；
The stronger the individual radiation sensitivity, the higher the GPA gene mutation frequency.
应用这项技术，可大大提高M 2代突变频率和选择效率。
Mutation frequency and selective efficiency in M2 were obviously increased by application of the technique.
他们指明了比基因单独突变，显著增高或降低的突变频率。
They identified the frequencies of mutations that were significantly higher or lower than if the genes had mutated independently.
HPRT基因突变频率与染色体畸变、微核具有良好的相关性。
The HPRT gene mutation frequencies had better linear relations with chromosome aberrations and micronuclei.
目的探讨个体辐射敏感性对GPA基因突变频率的影响及其校正方法。
Objective To study the influence of individual radiation sensitivity on GPA gene mutation frequency and the way to adjust it.
巨大胚和甜胚乳两突变体基因突变频率分别为0.0227和0.0070。
The mutation frequencies in ge and su mutant were 0.0227 and 0.0070 respectively.
结论：我们证实了原先发现的结论，即不同组织病理学亚型之间突变频率存在显著的差异。
CONCLUSIONS: we confirmed previous findings of pronounced differences in mutation frequency between different histopathological subtypes.
目的：研究rp1基因在中国RP患者中的突变频率、特征及其在RP发病机制中所起的作用。
OBJECTIVE: To investigate the mutation frequency, characteristics of RP1 gene in Chinese RP patients and its role in RP pathogenesis.
结论：IFABP基因54位点突变频率分布与种族无关，而可能与年龄、高脂饮食习惯相关。
CONCLUSION: Distribution of frequency of mutation at 54 Thr of IFABP gene is not associated with race, but possible associated with age and high-fat eating habit.
结论中国哈萨克族TPMT活性呈正态分布，总TPMT基因突变频率同汉族相比差异无显著性。
Conclusion There were no statistically significant differences in Chinese Kazakstan and Chinese Han in distribution of TPMT activity and genotype frequence of TPMT.
目的了解错配修复基因MSH6在不同形式大肠癌人群中的种系突变频率及特征，提供真正的突变热点。
Objective To explore germline mutation frequencies and features of mismatch repaired gene MSH6 in persons with different kinds of colorectal cancer.
方法采用多核细胞法研究肿瘤患者外周血淋巴细胞HPRT基因位点的突变频率，并与正常人群进行对比。
Methods A simple, rapid and sensitive poly-nuclear cell assay was used to investigate the frequency of HPRT locus mutation.
血型糖蛋白A（GPA）基因突变频率在作为生物剂量计及癌的风险预测方面最大的缺陷在于个体差异大。
The prominent disadvantage of using GPA mutation frequency as biodosimeter and cancer risk predictor is the significant individual differences.
在一定剂量范围内，人外周血淋巴细胞克隆效率与照射剂量呈负相关，HPRT基因突变频率与照射剂量呈正相关。
In the radiation dose range used, the colony efficiency of the lymphocytes was negatively correlated to the radiation dose, while the HPRT mutation frequency is positively correlated.
在一定剂量范围内，人外周血淋巴细胞克隆效率与照射剂量呈负相关，HPRT基因突变频率与照射剂量呈正相关。
In the radiation dose range used, the colony efficiency of the lymphocytes was negatively correlated to the radiation dose, while the HPRT mutation frequency is positively correlated.
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