性染色质(sex chromatin)指高等哺乳动物体细胞,在间期细胞核中性染色体的异染色质部分显示出来的一种特殊结构。人类性染色体有X和Y两种,所以性染色质也有X染色质(X chromatin)和Y染色质(Y chromatin)两种。性染色质检查可初筛性染色体病及鉴别性别,对两性畸形可辅助诊断。
兼性异染色质是在特定细胞发育命运中可能具有转录活性的异染色质。
Facultative heterochromatin is the heterochromatin that may become transcriptionally active in specific cell development fates.
我们会讨论在当代的模型化里染色质结构的重要性,并且温习在染色质结构和转录调控之间关系上,当前的研究工作成果。
We will discuss the importance of chromatin structure in contemporary modeling, and review recent research results on the relationship between chromatin structure and transcriptional regulation.
形态学观察结果显示, 水泡性口炎病毒感染BHK -21细胞的形态变化具有较典型的凋亡特征, 如细胞膜内陷、核染色质凝集边聚等;
The morphologic results showed that BHK-21 cells infected by VSV appeared peripheral condensation of chromatin, partition of cytoplasm and nucleus into membrane and so on.
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