Ito S, Dan K, Goodenough D
Chromosoma. 1981;83(4):441-53. doi: 10.1007/BF00328271.
The ultrastructural features of chromosome vesicle formation in early sea urchin embryos and chromosome vesicle uptake of tritiated thymidine is described. Envelopes which resemble typical nuclear envelopes form around the condensed anaphase chromosomes. In late anaphase or early telophase, the chromosomes swell and decondense and it is at this time when tritiated thymidine is incorporated. This study shows that DNA synthesis in the rapidly dividing cells or early sea urchin embryos occurs in chromosome vesicles which form during anaphase.
描述了海胆早期胚胎中染色体囊泡形成的超微结构特征以及氚标记胸腺嘧啶核苷的染色体囊泡摄取情况。在浓缩的后期染色体周围形成了类似于典型核膜的包膜。在后期末期或前期早期，染色体膨胀并解聚，正是在这个时候氚标记胸腺嘧啶核苷被掺入。这项研究表明，快速分裂的细胞或海胆早期胚胎中的DNA合成发生在后期形成的染色体囊泡中。
