any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities

methods:in 4 cases of acute radiation injury, radiodosages were estimated, clinical manifestation, laboratory examination results and chromosomal aberration rates were compared and analysed.

方法：对4例患者的意外受照史、剂量估算、临床表现、实验室检查、染色体畸变率检查进行综合分析。

methods the mutagenicity of k-asp by the micronucleus assay and chromosomal aberration test of chl were observed.

方法应用小鼠微核试验、哺乳动物培养细胞染色体试验，观察门冬氨酸钾对细胞的诱变性。

objective to investigate the clinical significance of chromosomal aberration of low dose professional radiation for workers in radiology departments.

目的：探讨长期小剂量照射下放射工作人员染色体畸变的临床意义。

finally, comet assay, micronucleus and chromosomal aberration test were used to study and estimate the genetic damage effect of lead on occupational exposure workers.

第三部分，采用彗星试验、微核试验和染色体畸变试验检测和评估职业接触铅人群的遗传损伤效应。

this suggests that the foetal malformation caused by congenital cmv infection might be linked to chromosomal aberration such as occurred in these two groups.

故先天性cmv感染引起的致畸现象可能与此二组染色体畸变有关。

objective to evaluate their genotoxic risk in nurses occupationally exposed to antineoplastic drugs with chromosomal aberration test and cytokinesis-block micronucleus (cbmn) test.

目的用染色体畸变试验和胞质阻断微核试验来评价职业性接触抗癌药物的护士的遗传毒性危险性。

the toxicity of fzk was evaluated by acute toxicity test, micronucleus test of bone marrow cells in mice, and chromosomal aberration test of bone marrow cells.

以fzk为受试物，通过小鼠经口急性毒性实验、小鼠骨髓细胞微核实验、小鼠骨髓细胞染色体畸变实验等毒理学实验对fzk的毒性进行了评价。

the chromosomal aberration rate of the patients with exophthalmus was higher than that of the patients without exophthalmus (p0.05).

伴突眼癥者和不伴突眼癥者之间的染色体结构畸变率有显着性差异，前者高于后者（p0.05）；

the main meiotic chromosomal aberration of pmc are multipolar division, loose pairing, inversion, tetravalent, interlocking chromosome, unequal segregation, straggling chromosome, bridge and laggards.

上述不育系花粉母细胞减数分裂的染色体畸变是：多极分裂、疏松配对、倒位、四价体、互锁染色体、不等分离、拖曳、桥、落后等；

methods toxicity tests were carried out on mice to measure ld50, mld, maximal tolerance dose (mtd) and chromosomal aberration and micronucleus rates of marrow cells.

方法实施小鼠急性毒性实验（半数致死量、最小致死量、最大耐受量），小鼠骨髓细胞染色体畸变实验，小鼠骨髓细胞微核实验。

the chromosomal aberration and sce of lymphocytes in 7 cases of patients occupationally exposed to lead were studied and another 7 normal cases were taken as control.

我们对7例职业性铅中毒病人和7例正常人进行了外周血淋巴细胞染色体畸变和sce分析。

methods the changes of aberration yields induced by different radiators were determined using chromosomal aberration assay in both bone marrow cells and spermatogonia.

方法不同辐射体核素诱发的畸变产额变化，通过骨髓细胞和精原细胞染色体畸变测定。

the chromosomal aberration test: the injection of the extracts and the controls was the same as the micronucleus test.

染色体畸变实验：供试液注射与微核实验相同。

the rate of chromosomal aberration in the workers working in grass root hospitals(0.421%) was higher than those working in upper level hospitals(0.083%).

基层医院放射工作者染色体畸变率（0.421%）明显高于上级医院（0.083%）。

the results showed that the frequency of chromosomal aberration and sce was higher in the groups treated with hyperthermia alone or irradiation alone than that of the control(p0.01) .

实验结果：单纯照射和单纯增温组染色体畸变率和sce发生率显着高于对照组（p0.01）；

reduction of chromosome number and decrease in chromosomal aberration rate.

染色体数量明显减少，畸变率下降；

the levels of chromosomal aberration and free radical scavenge system were determined in 58 patients with vitiligo.

对58例白癜风患者同时进行染色体畸变和自由基清除系统水平的测定。

effects of 1, 2,4-trichlorobenzene (tcb) stress on seedling growth, cell division and chromosomal aberration frequency of root-tip cells of vicia faba were studied.

研究了1，2 ，4三氯苯（tcb）对蚕豆幼苗生长、根尖细胞分裂及染色体畸变的影响。

the paper reports the chromosomal aberration of 80 cases with esophageal carcinoma treated for the first time with radiotherapy(rt).

观察了80例首次进行治疗的食管癌患者放疗前后外周血中淋巴细胞染色体畸变情况。

the molecular mechanism for chromosomal aberration and micronuclei induced by holmium ions was most probably dna breakage to root-tip cells of vicia faba.

鈥离子诱导蚕豆根尖细胞染色体畸变和微核产生的分子机制主要为dna断裂作用。

the study included five experiments, i. e, acute toxicity test and accumulative test of rats, bone-marrow micronucleus test and testis chromosomal aberration test of mouse, and ames test.

进行了小白鼠的急性毒性试验、蓄积毒性试验、小白鼠的骨髓细胞微核试验、睪丸染色体畸变试验及鼠伤寒沙门氏菌的致突变试验。

in this paper, the influence of benzamide on the frequency of micronucleated cells and chromosomal aberration in the root tip cells of vicia faba was evaluated.

本文研究了苯甲酰胺对蚕豆根尖细胞微核细胞诱发率及染色体畸变率的影响。

additionally, results of the analyses of chromosomal aberration induced by chronic irradiation, regional irradiation, and historical exposure were presented.

实践证明，染色体畸变分析作为一次急性全身照射生物剂量的评定是可靠的。

methods: the mutation for ald were studied with pec micronucleus test in bone marrow cell of mice in vivo and chromosomal aberration test of chl in vitro for ald.

方法：采用活体小鼠骨髓嗜多染色性红细胞（pec）微核试验和体外中国仓鼠肺细胞（chl ）染色体畸变试验，对al d进行诱变性研究。