在细胞分裂中期形成一个凹陷，又称主缢痕(primary constriction)。动粒(kinetochore)：着丝粒区两条染色单体外侧与纺锤体微管相接触的特殊结构。
基于784个网页-相关网页
Centromere is the primary constriction on the chromosome, a region at which the sister chromatids are held together.
着丝点是染色体的主缢痕，在这个地方姐妹染色单体连在一起。
Centromere --- The primary constriction on the chromosome, a region at which the sister chromatids are held together and at which the kinetochore is formed.
染色体的主缢痕，使姐妹染色单体连在一起，在其两侧各有一个由蛋白构成的动粒。
Objective To evaluate the effectiveness of external constriction valvuloplasty of superficial femoral vein in the treatment of primary lower extremity deep vein valve insufficiency.
目的探讨原发性下肢深静脉瓣膜功能不全的手术治疗方法及效果。
应用推荐