Methods and reagents for staining intracellular components
    2.
    发明授权
    Methods and reagents for staining intracellular components 失效
    染色细胞内成分的方法和试剂

    公开(公告)号:US5053054A

    公开(公告)日:1991-10-01

    申请号:US407723

    申请日:1989-09-14

    IPC分类号: G01N1/30 G01N33/52

    CPC分类号: G01N1/30 G01N33/52

    摘要: Reagents and methods for intracellular staining of anionic materials as provided. The inherent staining characteristics of a fluorescent molecule may be suitably altered by covalently linking a plurality of said molecules to a nonimmunoglobulin derived cationic polymer having the desired staining specificity. By careful selection of the net charge and size of the dye polymer complex, diffusion through the cellular membrane can be enhanced and an enhanced fluorescent signal obtained by localization of a plurality of fluorescent molecules at the site of interest.

    摘要翻译: 阴离子材料细胞内染色的试剂和方法。 荧光分子的固有染色特性可以通过将多个所述分子共价连接到具有所需染色特异性的非免疫球蛋白衍生的阳离子聚合物来适当地改变。 通过仔细选择染料聚合物复合物的净电荷和尺寸,可以增强通过细胞膜的扩散,并通过在感兴趣的位点定位多个荧光分子获得增强的荧光信号。

    Covalent attachment of macromolecules to polysulfones or
polyethersulfones modified to contain functionalizable chain ends
    3.
    发明授权
    Covalent attachment of macromolecules to polysulfones or polyethersulfones modified to contain functionalizable chain ends 失效
    大分子共价连接到改性成含有官能化链末端的聚砜或聚醚砜

    公开(公告)号:US5462867A

    公开(公告)日:1995-10-31

    申请号:US190732

    申请日:1994-02-02

    摘要: A hydrophobic polymer such as polysulfone or polyethersulfone is modified to contain an increased number of functionalizable chain ends such as by treating with an alkali hydroxide to provide hydroxyl groups. A linker is covalently bonded to a chain end of the polymer and a macromolecule is covalently bonded to the linker. A ligand may be covalently bonded to the macromolecule. The macromolecule can be a natural polymer, a synthetic polymer or a biologically active species. The hydrophobic polymer is preferably in the form of a microporous membrane. By the use of a four-component dope composition, substantially isotropic microporous structures in the form of flat sheets or hollow fibers are produced. An improved spinnerette assembly is provided for the production of hollow fibers.

    摘要翻译: 将疏水性聚合物如聚砜或聚醚砜改性为含有增加数量的可官能化链端,例如通过用碱金属氢氧化物处理以提供羟基。 接头共价键合到聚合物的链端,大分子与接头共价键合。 配体可以与大分子共价键合。 大分子可以是天然聚合物,合成聚合物或生物活性物质。 疏水性聚合物优选为微孔膜的形式。 通过使用四组分涂料组合物,产生基本上各向同性的平板或中空纤维形式的多孔结构。 提供改进的喷丝头组件用于生产中空纤维。