Methods: To analyze the chromosome karyotypes of circular lymphocytes in 61 patients with primary amenia.
方法分析61例原发闭经患者外周血淋巴细胞染色体核型。
The strain CNB-1 has a circular chromosome of 5373643 bp in length and it encodes 4803 open reading frames, 3 rRNA operons, 79 tRNA genes for all the 20 amino acids.
本研究在已有工作的基础上，对该菌株的全基因组进行测序，该菌基因组包括一个环状染色体和一个大质粒。
METHODS: Giemsa method and Simultaneous silver staining technique of both NOR and Cd are used to stain metaphase chromosome specimen of human outer circular blood respectively.
方法：分别应用Giemsa法和染色体着丝粒点&核仁组织区（Cd-NOR）同步银染法对人类外周血淋巴细胞中期染色体标本进行染色。
Method: To analyze the chromosome type of circular lymphocytes in couples with spontaneous abortions.
方法运用外周血淋巴细胞培养法检测自然流产夫妇双方的染色体核型。
DNA replication in Escherichia coli usually starts at a unique site, the replication origin oriC, on the circular chromosome and proceeds bidirectionally to the terminus.
在大肠杆菌中，DNA分子是从环状染色体上唯一的复制原点oriC开始沿着两个方向复制，直到终点结束。
The results showed that the irradiation of mixed high-energy particle field inhibited mitoses and produced various chromosomal aberrations such as micronucleus, chromosome bridges, circular chromosomes and dissociative chromosomes in root tip cells of wheat with significant dose-effects.
试验结果表明，混合粒子场辐照小麦种子可抑制根尖细胞有丝分裂，诱发染色体出现单微核、双微核、多微核、环状染色体、落后染色体、游离染色体、染色体断片等多种畸变类型。
Moreover, a circular plasmid containing a FRT site was site specifically integrated into chromosome via site specific recombination with a preset FRT site on the chromosome.
并将一个含有FRT重组位点的环状质粒整合到酿酒酵母染色体上预先设置的一个FRT重组位点上，实现了染色体定点整合。