染色质

Granulosus is further;2. In differentiation of closely relatedspecies, the changes in heterochromatin and pericentric inversions are key factors, this is wellnoted in the small chromosomes;3. A. mantzorum has well-differentiated XY type sex chromo-'.omes, the Y chromosome is mainly composed of euchromatin, but has strong C-band in themiddle of the long arm. It is suggested that the Y chromosome of A. mantzorum is in the-initial stage of sex chromosome differentiation.

结果表明：(1)四川湍蛙、理县湍蛙和棕点湍蛙之间的亲缘关系较近，而它们与棘皮湍蛙的亲缘关系较远；2）在近缘种的分化中，染色体结构异染色质的变化和臂间倒位是重要的因素之一，这在小型染色体上表现得尤为突出；四川湍蛙具有在形态上分化很明显的性染色体。C带分析表明，此性染色体主要由常染色质构成，但在其Y染色体的长臂上存在明显的中间C带，推测尚处于性染色体分化的初期阶段。

DNA methylation is usually associated with triggering histone deacetylation, chromatin condensation, and gene silencing.

DNA甲基化通常与组蛋白脱乙酰化、染色质浓缩和基因沉默相关，染色质浓缩，和基因沉默。

Here, we investigated heterochromatin and euchromatin profiles of the entire fission yeast genome and explored the role of RNA interference in genome organization.

这里，我们对裂殖酵母整个基因组上的异染色质和常染色质的状态进行了研究，并探索了RNA干扰在基因组组织中的作用。

There were distinct nucleoli and abundant euchromatin. Little heterochromatin could be found.

细胞核内核仁明显，有大量的常染色质，几乎看不到异染色质。

It could be deduced that the regions of the former were the hot ones for recombination and rich in euchromatin, while those of the latter were the cold ones and rich in heterochromatin.

可以推论，前者应当是重组较热，常染色质较为丰富的区域，而后者则为重组较冷，异染色质较为丰富的区域。

In DAPI banding pattern, the dark region is generally thought to be euchromatin rich and the bright region is heterochromatin rich. It just provided the experimental foundation for the above deduction.

在DAPI带型中，暗区一般被认为是常染色质较丰富的区域，而亮区为异染色质较丰富的区域，这正好为上述的推论提供了实验依据。

Since then, the gene localization has developed from simply being described as at the euchromatin region and heterochromatin region to more complicated nuclear localization. Therefore, the gene regulation attracted more attention now.

因此基因在细胞核内的定位就由原来简单认为的异染色质区和常染色质区发展得更为深入了，基因在细胞核内的定位以及位置的变化与基因表达调控之间的关系也越来越受到重视。

The results indicated that the expression level of cgi-100 decreased in K562 cells treated with matrine. Heterochromatin decreased, euchromatin and the proportion of S phase in K562-cgi-100 cells increased, and cell proliferation enhanced.

结果表明，在苦参碱作用K562细胞后cgi-100基因表达下调；重组K562细胞中cgi-100基因过表达，且常染色质增加，异染色质减少，细胞增殖旺盛，S期细胞增多，增殖速度高于对照组。

Euchromatin stains more intensively than heterochromatin during nuclear division.

常染色质具有转录活性，因而可以进行蛋白质的合成，而异染色质通常不具有转录活性。

Only allochromosome allotopia is not explainable to the gene expression of stem cells.

如果仅仅是异染色质的错位，则不是干细胞基因表达的结果，在干细胞自我更新中充分证明，异染色质的改变导致了组蛋白的改变。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。