ring chromosome

Study on the clinical cytogenetics of 13 ring chromosome syndrome

13号环状染色体综合征的临床及其细胞遗传学研究

A Case with Ring Chromosome 4

一例4号环状染色体

Cytogenetic analysis and phenotype location analysis on the karyotype of a ring chromosome 21 syndrome

一例21号环状染色体综合征的细胞遗传学和表型定位分析

The aberrations included chromosome bridge , chromosome fragment , chromosomal adherence , ring chromosome , micronuclei etc.

结果表明：电子流与γ射线、X射线一样，能诱发细胞染色体畸变，出现染色体桥，染色体断片，染色体粘连，环状染色体，以及微核等。

There were five other chromosomal abnormality and twenty-five fetal defects detected . There were two 18 trisomy , 45 , XO , 18 ring chromosome euploid , anencephaly and abdominal wall defects , etc.

其他胎儿异常，包括18-三体2例，18-环状，45，XO，多倍体，无脑儿及胎儿腹壁缺损各1例及23例胚胎坏死。

Result : The abnormal chromosome rate of bio-engineering cells muted by outer space were : ring chromosome , 10.5 % ; acenericfragment , 36.75 % ; triceneric and fourcentric , 13 % .

结果：经太空诱变后的生物工程细胞染色体畸变率为：环状占10.5%，无着丝断片占36.75%，三射、四射体占13%。

A case report of ring ( 14 ) chromosome with seizures and facial anomalies

环状14染色体伴有癫痫及颜面异常一例报告