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   着丝点 在 妇产科学 分类中 的翻译结果: 查询用时:0.375秒
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  centromeric dots
The nature of centromeric dots in Nigella chromosomes
      
Derived telocentric chromosomes in Nigella doerfleri have pairs of Giemsa staining dots at their terminal centromeres which appear in size and behaviour to be identical with the centromeric dots of their submetacentric homologue.
      
That the centromeres also possess centromeric dots indicates that the dots represent essential components of the centromere, a conclusion which supports the contention that they are kinetochores.
      
In all 3 species pairs of Giemsa-positive centromeric dots, representing the centromeres, were masked both by proximally or centromerically localized bands, irrespective of the class of heterochromatin they represented.
      
Centromeric dots in crane-fly spermatocytes: meiotic maturation and malorientation
      
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The chromosome patterns of cultured peripheral blood lymphocytes were studied in 20 patients with cervic-

宫颈癌患者外周血淋巴细胞染色体的数目及结构均发生明显的异常。患者细胞中二倍体的数目只占72.95%,亚二倍体及超二倍体细胞比例明显升高。患者染色体结构畸变率约为正常人的3倍,其中环形染色体、双着丝点、染色单体断裂、染色体易位重组明显增多。经放射线治疗后,染色体的数目及结构异常与放疗前相比有显著改变,说明放射线虽可杀伤肿瘤细胞,但对正常细胞也有较严重的损伤作用。

Trichomonas vaginalis in secretion from severe vaginitis were inoculated in podapre trichomonady and were cultivated purely, the final concentration of colchicine was 2~(-7)mol/L. The chromosome were made with the air desiccation. The number was 2n=24 n=12. The first group from 1 to 3 couple was big type in the middle centromere (M), the second group from 4 to 6 was middle type in the middle centromere(m), the third group from 7 to 8 couple was middle type in the secondary middle, centromere (Sm). the fourth...

Trichomonas vaginalis in secretion from severe vaginitis were inoculated in podapre trichomonady and were cultivated purely, the final concentration of colchicine was 2~(-7)mol/L. The chromosome were made with the air desiccation. The number was 2n=24 n=12. The first group from 1 to 3 couple was big type in the middle centromere (M), the second group from 4 to 6 was middle type in the middle centromere(m), the third group from 7 to 8 couple was middle type in the secondary middle, centromere (Sm). the fourth group from 9 to 11 couple was middle tiny type in the secondary end centromere(St), the fifth group from the twelfth couple was tiny type in end centromere with the comma shape.

本文对黑龙江省重症阴道炎患者分泌物中的阴道毛滴虫染色体研究结果为:数目为2n=24,n=12,第1组1~3对,大型中部着丝点(M);第2组4~6对,中型中部着丝点(m);第3给7~8对,中型亚中部着丝点;第4组9~11对为中小型亚端部着丝点;第5组第12对,为小型端部着丝点,呈逗点状。

The requency of satellite association(SAF) in peripheral blood of 200 couples with spontaneous abortion and 200 normal couples were studied by SA-banding technique.The reequencies of satellite in chromosomal were 3.96% in group of abortion and 2.66% in normal control group.And there was signifficantly difference between them(P<0.01).The distribution rates of D/G were 0.40±0.01/cell in group of abortion and 0.39±0.01 in normal group.And there was no difference between them(P>0.05).The rate of centromeric dots-nucleolar...

The requency of satellite association(SAF) in peripheral blood of 200 couples with spontaneous abortion and 200 normal couples were studied by SA-banding technique.The reequencies of satellite in chromosomal were 3.96% in group of abortion and 2.66% in normal control group.And there was signifficantly difference between them(P<0.01).The distribution rates of D/G were 0.40±0.01/cell in group of abortion and 0.39±0.01 in normal group.And there was no difference between them(P>0.05).The rate of centromeric dots-nucleolar organizer region(Cd-NOR) fusion were 0.34±0.18/cell and 0.24±0.18/cell in the abortion and normal couples.The difference was signiffcant(P<0.05).These results indicated that the increasing of frequencies of chromosojmal satellite association and Cd-NOR fusion may be one of important reasons leading to spontaneous abortion.We suggested that the examination of SAF among the couples with spontaneous abortion born clinical significance.

对200 对自然流产夫妇和200 对已生育正常胎儿并无自然流产史的夫妇的外周血染色体随体联合频率(SAF) ,进行分析研究。结果:SAF流产组和对照组分别平均为3-69% 和2-66 % ,两组比较差异有极显著意义(P< 0-01) 。D/G 的分布频率流产组和对照组分别平均为0-40 ±0-01/ 细胞和0-39 ±0-01/ 细胞,两组比较差异无显著意义(P> 0.05) 。流产组着丝点一核仁组织区融合(CdNOR)频率平均为0-34±0-18/细胞,对照组平均为0-24±0-18/ 细胞,两组比较差异有显著意义(P< 0-05) 。提示:自然流产夫妇SAF和CdNOR融合频率增高可能是造成自然流产的重要原因之一,对自然产夫妇的SAF进行检测,具有临床意义。

 
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