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    • 8. 发明申请
    • MAGNETIC SEPARATION USING CHELATED MAGNETIC IONS
    • 使用电磁离子进行磁分离
    • WO1984001503A1
    • 1984-04-26
    • PCT/US1983001607
    • 1983-10-17
    • COULTER ELECTRONICS, INC.
    • COULTER ELECTRONICS, INC.GRAHAM, Marshall, D.
    • A61K35/14
    • C12Q1/24B03C1/002B03C1/01C02F1/488C12N1/02C12N7/00C12N2710/00051
    • A new method for magnetic separation from a carrier fluid of biological cells or other organic or inorganic particles having a negative surface charge. A paramagnetic salt is mixed with an aqueous solution of a chelating agent, for example EDTA. The cells or particles to be separated are mixed with this paramagnetic carrier solution, and the resulting mixture is exposed to a high gradient magnetic field. The cells or particles attract the chelated paramagnetic cations preferentially to the carrier solution such that the particles develop a magnetic susceptibility greater than that of the carrier liquid. The method achieves highly repeatable separations at lower magnetization fields than existing high gradient magnetic separation methods. Feasibility has been shown for erbium chloride and dysprosium chloride, with whole blood as the sample. In this instance, single-pass magnetic separation efficiencies significantly greater than those attainable with paramagnetic erythrocytic hemoglobin are readily available.
    • 一种用于从具有负表面电荷的生物细胞或其它有机或无机颗粒的载体流体中磁分离的新方法。 将顺磁盐与螯合剂(例如EDTA)的水溶液混合。 将待分离的细胞或颗粒与该顺磁载体溶液混合,并将所得混合物暴露于高梯度磁场。 细胞或颗粒优先吸收螯合的顺磁性阳离子到载体溶液,使得颗粒形成大于载体液体的磁化率。 该方法在比现有的高梯度磁选法更低的磁化场下实现了高度可重复的分离。 已经显示了氯化chloride和氯化镝的可行性,以全血为样本。 在这种情况下,显着大于顺磁性红细胞血红蛋白可获得的单遍磁分离效率是容易获得的。