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vascular tissue 【植物;植物學】導管組織;【動物;動物學】脈管組織。

vasculum

Vascular endothelial cells between the blood and the surrounding vascular tissue play a central role in hemastatic balance , angiogenesis , ionizing radiation , and inflammation . recent advances in cell biology , biochemistry and molecular biology have seen the new physiological functions of endothelial cells . the studies aim at the function of vascular endothelial cells and its regulation 近年來,生物化學、細胞生物學以及分子生物學研究不斷地揭示了內皮細胞新的生理功能,本實驗對血管內皮細胞功能及其調節機制進行了一些的研究,期望揭示內皮細胞在血管新生及電離輻射損傷中的新機制。

According to the statistics of main journals about late 50 years in our country , our phytologists pay attention to the comparative anatomy studies of the carpoplyte , such as the structure of vascular tissue , leaf and leaf epidermis , the structure and development of flower , the characteristic of seed and seed coat , the secretory tissue , some primitive carpophytes and so on 根據近50年國內主要期刊統計,我國植物學者重點在種子植物的維管組織結構、葉及其表皮結構、花的結構和發育、種子及種皮特征、分泌組織以及一些原始種子植物等方面開展了比較解剖研究,為一些植物科、屬的系統分類提供了解剖學依據。

In addition , the pith of root and stem is flourishing for prosperous growth period and declining period , the vascular tissue storing the nutrient and providing the nourishment for the biennial plant in next year from abnormal secondary growth is developing in pith , unusual structure eg . epidermis and vice - epidermis , bubble form cell , short pipe numerators and wreath grid types leaf etc . in each organ of pugionium comutum ( l . ) gaertn . had been formed to adapt to dry environment , so the characteristics on appearance and anatomies in pugionium cornutum ( l ) gaertn . has closely of relation with its anti - drought and its adapting to desert environment 此外,葉片旺盛生長期、衰退期根莖具發達的髓,髓內有異常次生生長形成的維管組織,貯藏養分,為沙芥次年形成二年生植株提供營養,沙芥各器官在解剖結構方面都形成了特化結構如具表皮及副表皮、泡狀細胞、短的導管分子及環柵型葉等以適應干旱的環境,因此沙芥各器官的形態及解剖特點與其抗旱、適應沙漠環境有密切的關系。

Result from transgenic plants and the blast pf40 in genbank given the hits that pf40 gene may through regulated the development of vascular tissue , and then influence the absorption or transport of some mental , this would change the hormone of plants , so the pf40 gene may function as a developmental regulators 通過轉基因的結果與軟件的分析,推測pf40基因的作用可能是通過改變植物維管組織的發育從而調控一些離子的運輸或吸收進一步激活一些激素的表達或者激素受體,最終影響了植物的生長模式。

The tissue - localization showed that there were more silver - grains labelled in the ray , callus and regenerated differentiating vascular tissue cells than that in other tissues . it further suggested that the high concentration of endogenous iaa triggered the dedifferentiation of the immature vascular tissues after girdling , and the lower concentrated iaa flow could promote the initiation and activity of the regenerated cambium 內源iaa組織定位的結果表明射線細胞愈傷組織和新生維管組織內均有較多的銀顆粒標記。這些似可表明,高濃度的內源iaa可啟動未成熟維管組織細胞的脫分化,而較低濃度的內源iaa流則可誘導再生形成層的發生和活動。

Choroidal neovascularization ( cnv ) secondary to age - related macular degeneration ( amd ) also involves the abnormal rapid growth of vascular tissues . the photosensitizing drug administered will bind specifically to the abnormal vessel 由于老年黃斑退化會引致脈絡膜新增不正常的血管,而光動力療法所用的感光藥物正好協助把不正常的血管堵塞。

Choroidal neovascularization secondary to age - related macular degeneration also involves the abnormal rapid growth of vascular tissues . the photosensitizing drug administered will bind specifically to the abnormal vessel 由于老年黃斑退化會引致脈絡膜新增不正常的血管,而光動力療法所用的感光藥物正好協助把不正常的血管堵塞。

Hydrophytes show certain adaptations to such habitats , notably development of aerenchyma , reduction of cuticle , root system , and mechanical and vascular tissues , and divided leaves 水生植物表現出適應水生的特性:具有發達的通氣組織;表皮、根系、機械組織、維管組織退化;葉片分裂;葉片、根和莖中均具有通氣道或氣腔。

Roots also differ from roots in the arrangement of xylem and phloem , having a solid central strand of vascular tissue rather than a hollow cylinder of conducting tissue 根和莖不同,它無葉綠素,沒有芽和葉,木質部和韌皮部的排列順序也不同,其內部為實心的維管組織,而莖的內部為中空的圓柱形輸導組織。

The cells of the bundle sheath that surround the vascular tissues are large and contain specialized elongated chloroplasts that do not contain grana , but form starch grains 它的特點為:圍繞在維管組織外層的維管束薄壁細胞較大,并含有較大的葉綠體,這些葉綠體中不含基粒,但形成淀粉粒。

These factors either impede blood circulation around the anal area or weaken the surrounding tissues , resulting in blood vessel engorgement and swelling and protrusion of vascular tissue 以上的原因會導致肛門附近的血液循環受到阻礙或令到周圍的組織變弱,引起血管腫脹及血管組織突出。

When mature the gametophyte shows differentiation into stem and leaves but there are no roots or vascular tissues , but mosses do possess elongated conducting cells 當成熟時,配子體表現出莖和葉的分化,但沒有根和維管組織,但蘚類擁有一些延長的傳導細胞。

Sclerenchyma is often found associated with vascular tissue and exists as two distinct types of cell : the long fiber and the shorter sclereid 厚壁組織由兩種形式截然不同的細胞組成:較長的纖維和較短的石細胞。

Vascular tissue transports water and nutrients through the plant and also provides strength and support 維管組織不僅可以在植物體內運輸水分和營養物質而且為植物體提供支撐力,具有支持作用。

Part i objective : to provide cells resource for the experimental study on vascular tissue engineering 第一部分第四軍醫大學碩士學位論文目的:為血管組織工程的實驗研究提供細胞來源。

Secondary vascular tissue , found only in plants with secondary thickening , develops from the vascular cambium 次生維管組織由維管形成層發育而來,僅存在于有次生加厚的植物中。

The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems 內皮層皮層的最內層,在根、莖的導管組織周圍形成一道葉鞘(莖衣)

Procambium ( procambial strand ) the layer of cells that gives rise to the vascular tissue 原形成層(原形成層束) :形成維管組織的一層細胞。

Fiber a form of sclerenchyma cell that is often found associated with vascular tissue 纖維:一種厚壁組織細胞,通常與維管組織有關。