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morphogenesis n.【動物;動物學】1.形態發生,形態形成。2.器官發生...

morphologic

Alterations in glycosylation have been proposed to participate in cell adhesion , receptor activation , cell differentiation and tissue morphogenesis . because the early embryo is composed of cells that must adhere to other embryonic cells , it seems likely that glycans modulating this adhesion would have been indispensable for early development . genetic elimination or partial abrogation of expression of some major classes of glycans , such as n - glycans , glycosphingolipids , hyaluronan and sialic acids , has been shown to be lethal during murine embryogenesis 胚胎發育過程中伴隨著細胞表面糖鏈表達水平及結構的改變,研究表明這些改變參與介導了胚胎細胞之間的粘附聯系,因此,糖鏈對于胚胎正常發育是必須的,一些糖鏈結構(如n -連接糖鏈,糖鞘脂,透明質酸,唾液酸等)的表達缺失能導致小鼠死亡于胚胎的早期發育階段。

It is used to probe the relationship between the structure and activity of proteins ; to define the roles of particular proteins and protein assembles in the cell ; to determine the logic and order of molecular events during differentiation and morphogenesis ; to improve the activity of enzyme , antibiotics and so on 引導蛋白質功能進化常用的方法是模擬和加速蛋白質基因自然重組的進程,即在蛋白質的基因中引進隨機突變。因此,蛋白質基因體外隨機突變的方法影響著引導蛋白質功能進化的效果。

The t1 - weighted and ^ - weighted magnetic resonance imaging ( mri ) have been used to study the morphogenesis of chicken embryo and other contains in the egg during the earlier hatching process . t2 values of amniotic fluid , yolk and egg white have been measured by the means of multi slice multi echo ( msme ) sequence . in - vivo “ h magnetic resonance spectroscopy ( in - vivo * h mrs ) has been used to analyze the ingredients of amniotic fluid , yolk and egg white 用核磁共振成像( magneticresonanceimaging , mrl )中ti加權、 2加權成像的方法在無損的條件下對雞胚發育過程中的形態結構變化進行了研究,得到了胚胎及蛋白、蛋黃等在胚胎發育的早期結構變化的圖像,并用多片多回波( multislicemultiecho , msme )的方法測定了它們中質子的r2值,為研究胚胎的發育過程提供了有價值的參考。

Human bone morphogenetic protein 3 is a member of tgf - b superfamily . lt can induce the differentiation of cartilage and bone tissue in mesenchymal cell . and is important to bone self - repairment and bone development during embryo morphogenesis . in addition , some other biological activities of hbmp - 3 have also been found . such as inducing development of embryo and stimulating differentiation of neural and blood cells . therefore , there is a great prospect in the use of hbmp - 3 . there is trace content of hbmp - 3 in human body . it has been expressed in the expression system of eukaryotes and prokaryotes respectively , but its application is restricted because of defects in the process and modification after translation in prokaryotic cells and higher costs and lower yields existed in eukaryotic expression system 人骨形成蛋白3 ( hbmp - 3 )屬于tgf -超家族的一員,可以誘導間充質細胞分化為軟骨和骨,在胚胎時期骨骼發育和骨再生修復中起著重要的作用,而且對胚胎發育過程中中胚層的誘導和分化、造血組織的發育以及神經系統的發育和修復等都起著重要作用,因而hbmp - 3有廣闊的市場前景。它在人體內含量極微,盡管研究人員已經在原核細胞和真核細胞表達系統中分別進行了表達,但是由于原核表達系統缺乏翻譯后的加工修飾,真核表達系統存在成本高、產量低等特點,限制了其在臨床上的應用。

The results showed that the levels of endogenous polyamines in embryogenic calli were higher than those in non - embryogenic calli ; the changes of endogenous polyamines in the process of somatic embryogenesis approximately showed an “ m “ curve during embryogenic callus and globular embryoids ; the content of polyamines was the 2 turning - point stages in the changes of endogenous polyamines in somatic embryogenesis ; the changes of endogenous polyamines were earlier than those of morphogenesis 結果表明:龍眼胚性愈傷組織中內源多胺含量比非胚性愈傷組織高;體胚發生過程中內源多胺含量變化趨勢大致呈“ m “狀,在胚性愈傷組織和球形胚階段轉折;內源多胺含量的變化先于形態學的變化。

In order to explore the method of new stock micropropagation , the micropropagated plantlets of malus pruniolia var . ringo were used as material to culture in designed sugar - free culture box with environmental control system for studying their rooting ability , photosynthesis and root morphogenesis , and compared with those cultured in sugar - containing culture system 摘要為了探索新的砧木快速繁殖的方法,以圓葉海棠離體新梢為供試材料,采用自行設計的無糖培養箱和環境控制系統,進行無糖培養生根研究,比較無糖培養與有糖培養海棠離體新梢光合指標和根系形態指標之間的差異。

In this paper , we discussed the similarity between machine design process and biology growth process , especially the similarity between machine structure design process and biology embryo growth process , and point out that we should use the rule of biology embryo growth process ( morphogenesis ) to implement assembly structure design automation , and put forth a feasible plan to implement the assembly structure design automation 摘要論述了機械設計過程與生物發育過程之間的相似之處,特別是機械結構設計過程與生物胚胎發育過程之間的相似性,指出借鑒生物胚胎發育的規律(形態發生學)實現裝配結構設計自動化的可能性,并從計算機實現的角度提出了可行的步驟和方案,利用此方案可實現裝配結構的自頂向下設計。

Aralia elate ( miq . ) seem is a kind of uncultivated vegetable from the mountain changbai . the process of somatic embryogenesis includes morphogenesis stage of calli , conversion stage of embryonic calli , embryogenetic stage and regeneration stage of plant in aralia elate ( 本論文采用sds -聚丙烯酰胺凝膠電泳技術,對龍芽?木體細胞胚發生過程中愈傷組織形態建成、胚性愈傷轉化、胚狀體發育和植株再生四個階段的可溶性蛋白的動態變化進行分析。

This article reviews the recent research advances of floral formation ( including floral induction , identification of inflorescence , floral evocation and floral morphogenesis ) in plants ( taking example by arabidopsis and antirrhinum ) 摘要以擬南芥、金魚草為例,介紹了近幾年植物成花(包括成花誘導、花序分生組織的組成、花發端、花器官發生及發育)研究的一些進展。

Secondly , the proteins of 70kd , 63kd , 55kd , 45kd , 36kd expressed in morphogenesis stage of calli at first , and continued their expressions in the whole somatic embryogenesis 其次, 70kd 、 63kd 、 55kd 、 45kd和36kd的表達都起始于愈傷組織形態建成階段,并在整個龍芽榴木離體培養再生體系中動態表達。

In this mini - review , we will summarize recent progress of auxin regulation in leaf development and morphogenesis , and try to understand the complex regulation network of leaf development 本文著重介紹生長素在葉片生長發育和形態建成中的調控作用,試圖了解復雜葉片發育調控網絡。

Urist mr . iwata h , ceccotti pl , et al . morphogenesis in implants of insoluble bone gelatin [ j ] . prok natl acad sci usa , 1973 , 70 : 3511 杜俊杰,胡蘊玉,羅卓荊.堿性成纖維細胞生長因子增強人重組骨形態發生蛋白- 2誘導成骨的調節機制[ j ] .中國矯形外科雜志, 1999 , 6 ( 7 ) : 526

Stat3 ( signal transducer and activator of transcription 3 ) is important for embryo morphogenesis , cell growth , apoptosis and cell mobility 信號轉導和轉錄激活因子3 ( stat3 )在動物的早期胚胎發生、細胞生長、凋亡控制和細胞運動等過程中起著很重要的作用。

The self - made tapestry : pattern formation in nature . oxford university press , december 1998 , pp . 7 - 99 . 3 turing a m . the chemical basis of morphogenesis 在本文系統中,我們引入了多種類型的細胞,每種類型的細胞負責整個紋理圖案中某一種顏色的合成效果。

Wnt - 1 , the vertebrate counterpart of the drosophila wingless gene , plays an important role in the early morphogenesis of neural tissues Wnt - 1基因是果蠅wingless ( wg )基因在脊椎動物中的同源基因,在神經系統早期發育具有重要的作用。

Objective to find the factors affecting the morphogenesis of tissue - engineered cartilage in animals who have inherent immunity 目的在有免疫力的動物體兔體內探索組織工程化軟骨生成的影響因素。

Thus , the emphasis in this paper will be placed on morphogenesis of caco3 in the light of biomimetic strategies 所以本文的重點是利用仿生合成技術,合成出具有多種奇異形貌的碳酸鈣材料。

Plant morphogenesis interacts with the process of co2 exchange in many ways , both simple and complex 植物的形態發生在許多方面(簡單的和復雜的)與co2交換過程是相互作用的。

Floral morphogenesis of wikstroemia delavayi thymelaea - ceae and its phylogenetic implication 的花部形態發生及其系統學意義