概述了异染色质生化组成及其在超微结构方面的研究进展，着重介绍了着丝粒的异染色质超微结构研究。
The paper has summarized development of biochemical component and ultrastructure of heterochromatin in eukaryote with an introduction to the development of ultrastructure in centromere.
谷物色选机利用光电技术，根据颜色和形状的差别，从谷物中将颜色不正常或感染了病虫害的异色粒、被害粒以及石子等外来夹杂物检出并分离。
Grain color selector with photoelectricity technology, is used to detect and separate the bad works from the grain compound, based on the differences of color and shape.
异基因造血干细胞移植是目前唯一可以治愈慢粒的疗法，在年轻患者中尤为成功。
Allogeneic stem cell transplantation is the only treatment that can cure CML at this time. This treatment is most successful in younger patients.
异基因造血干细胞移植是目前唯一可以治愈慢粒的疗法，在年轻患者中尤为成功。
Allogeneic stem cell transplantation is the only treatment that can cure CML at this time. This treatment is most successful in younger patients.
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