nuclear chromatin 中文意思是什麼
nuclear chromatin
解釋
核染色質-
In human epithelial cells, sex chromatin appears as a small granule attached to the nuclear envelope.
在人的上皮細胞中，性染色質象個小顆粒，連在核膜上。 -
At low concentration of zn, the changes in ultrastructure were nuclei deformation, chloroplast swelling and disorder of thylakoid arrangement ; serious damages in ultrastructure caused by greater zn stress were indicated by scattered nucleoli, condensed chromatin, almost empty nuclei with nuclear membrane disrupted and nucleoplasm flowing into cytoplasm, swollen and partly dissolved cristae of mitochondria, disrupted and collapsed chloroplast envelopes, and some dissolved thylakoids that flew into cytoplasm
超微結構的變化也呈現加重趨勢，低濃度處理的變化為細胞核變形、葉綠體膨脹、類囊體排列紊亂；嚴重的超微結構的損傷是核仁散開、染色質凝集，細胞核幾乎成為空核和核膜破裂，核質散出；線粒體脊突膨脹和部分溶解；葉綠體膜斷裂、消失和部分類囊體溶解和散到細胞質中。 -
The nuclei are monomorphic with inconspicuous nucleoli. the nuclear chromatin has somewhat granular appearance. mitotic actiity is not increased. ( same case as preious 2 illustrations )
瘤細胞核形態單一，核仁不明顯。核內染色質呈顆粒狀表現。有絲分裂活性未見增強。 -
The effectiveness of the nuclear localization signal selected was clearly tested in initial experiments. based on this, the co - transfection systems used in the study was established. we first observed the multinucleate cells and chromatin bridges in cultured hela cells when the cells are marked with gfp and hochest33342, after co - transfection with the gfp expression plasmids and rnai plasmids rhe or rhc
當分別共轉染附加kozac序列和核定位信號的gfp與人集縮素smc亞基hcap一e特異的rnai質粒rhe和人集縮素smc亞基hca屍一c的f { nai質粒rhc時，都觀察到gfp和hochest33342標記的轉染后hela細胞表現多核和染色質橋現象。 -
Epigenetic modification of the genome ensures proper gene activation during development and involves : genome methylation changes ; the assembly of histon and histone variants into nucleosomes and remodeling of other chromatin - associated proteins such as linker histones, polycomb group, nuclear scaffold protein, and transcription factors
這些染色質的再程序化包括dna的甲基化和核小體組蛋白的乙酰化等。組蛋白乙酰化在染色質結構調節、 dna復制、基因轉錄、細胞分化及癌細胞發育都有研究，但在克隆動物中卻是一個有待深入探索的領域。 -
The head of spermatozoa contains a nucleus but no acrosome. the nuclear fossa developes well. during the process of spermtogenesis, within the nucleus the chromatin condenses step by step into wads, among which are loose chromatin fibers
成熟精子頭部無頂體，主要為核占據，精子形成過程中，細胞核中的染色質濃縮成緻密的團塊狀，團塊狀的染色質之間分佈著鬆散的纖維狀染色質。 -
The key to nuclear transplantation with adult cells lies in nuclear reprogramming or chromatin remodeling
成年細胞核移植的關鍵在於核的再編序或核染質的再塑造。 -
The chromatin of sertoli cell condensed tightly and formed some low electron density areas, nuclear membrane dissolved, the intercellular junction dilated
支持細胞核染色質凝聚程度增加並出現不規則低電子密度區;核膜溶解，細胞間連接進一步拉開。 -
Recently, human elongator complexes have been isolated. the human complex is a fragile six - subunit complex that interacts with rnap ii and has hat activity directed against histone h3 and h4. depletion of elongator from hela nuclear extracts reduces the ability of these extracts to transcribe chromatin templates, providing biochemical support for the proposed role of elongator during transcript elongation in chromatin
近來人elongator也被分離，它也是個不穩定的六亞基復合物，可與rnap相互作用，具有hat活性，能乙酰化h3和h4 ，在hela細胞核抽提物中去除elongator可降低抽提物對染色質模板的轉錄延伸速率，提供了該復合物在染色質為模板的轉錄延伸中有功能的生化證據，但是上面的信息都來自體外研究。 -
For 24 h was observed under phase - contrast microscope flourescent micrographs by acridine orange staining. the morphologic changes of apoptotic cells included neurite disappearance, nuclear chromatin condensation, and so on
在一定濃度范圍內對培養早期神經細胞的分化有促進作用，而在後期卻有神經毒作用
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