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    • 4. 发明授权
    • Immunoreactive reagent particles having tracer, receptor molecules and
protein of pI less than 6
    • 具有示踪剂,受体分子和pI小于6的蛋白质的免疫反应性试剂颗粒
    • US4812414A
    • 1989-03-14
    • US98250
    • 1987-09-18
    • Harold C. Warren, IIIBrian A. Snyder
    • Harold C. Warren, IIIBrian A. Snyder
    • G01N33/543G01N33/546G01N33/547G01N33/569
    • G01N33/54313Y10S436/825
    • A reagent useful in the determination of an immunoreactive species comprises water-insoluble particles having tracer molecules associated therewith. Bound to the outer surface of the particles are: (i) receptor molecules which are reactive with the species, and (ii) molecules of a protein having a pI less than about 6, and which protein is not reactive with either the species or the receptor molecules. The weight ratio of the receptor molecules to the low pI protein molecules is from about 100:1 to about 1:10. This reagent is useful in agglutination and other immunological reactions. A method of preparing the reagent includes providing a suspension of the particles and contacting them with the receptor molecules and low pI protein so as to attach both to the particles. The protein is present in the suspension in an amount such that substantially all of it is attached to the particles. The reagent thus prepared can be used, for example, in agglutination assays for the determination of a multivalent immunoreactive species, such as Streptococcus A antigen.
    • 可用于测定免疫反应性物质的试剂包括具有与其相关的示踪分子的水不溶性颗粒。 与颗粒的外表面结合是:(i)与物质反应的受体分子,和(ii)pI小于约6的蛋白质的分子,并且哪种蛋白质不与物种或 受体分子。 受体分子与低pI蛋白质分子的重量比为约100:1至约1:10。 该试剂可用于凝集和其他免疫反应。 制备试剂的方法包括提供颗粒的悬浮液并使其与受体分子和低pI蛋白质接触,以便将它们附着到颗粒上。 蛋白质以一定量使其存在于悬浮液中,使得其基本上全部附着于颗粒。 如此制备的试剂可以用于例如用于测定多价免疫反应物质例如链球菌A抗原的凝集测定。
    • 7. 发明授权
    • Lower alcohol sulfate wash solution
    • 低级酒精硫酸盐洗液
    • US5599715A
    • 1997-02-04
    • US546980
    • 1990-07-02
    • Harold C. Warren, IIINorbert S. NorkusMargaret J. Smith-Lewis
    • Harold C. Warren, IIINorbert S. NorkusMargaret J. Smith-Lewis
    • G01N33/531G01N33/537G01N33/76G01N33/53
    • G01N33/76G01N33/537Y10S435/81Y10S435/975Y10S436/808Y10S436/811Y10T436/107497
    • An aqueous wash solution is buffered to a pH of from about 5 to about 9 and contains at least about 1.5 weight percent of a compound comprising a lower alcohol sulfate anion having from 6 to 10 carbon atoms and an alkali metal or ammonium cation, such as sodium decyl sulfate. This wash solution is useful in a method for the determination of an immunological ligand, and is not prone to crystallization at lower temperatures. Particularly, it is useful for washing the immunological complex formed between the ligand and a receptor molecule therefor. Unreacted materials can be readily separated from the complex by the washing, particularly if the separation is carried out using a filtration membrane in a test device. A test kit for ligand determination comprises the wash solution as well as one or more receptors for the ligand, at least one of which is labeled for detection. This kit is particularly useful for measuring human chorionic gonadotropin (hCG) as an early indicator of pregnancy.
    • 将水性洗涤溶液缓冲至约5至约9的pH,并含有至少约1.5重量%的包含具有6至10个碳原子的低级醇硫酸根阴离子和碱金属或铵阳离子的化合物,例如 十二烷基硫酸钠。 该洗涤溶液可用于测定免疫配体的方法,并且在较低温度下不易于结晶。 特别地,用于洗涤配体和受体分子之间形成的免疫复合物是有用的。 未反应的材料可以通过洗涤容易地从络合物中分离,特别是如果在测试装置中使用过滤膜进行分离。 用于配体测定的测试试剂盒包括洗涤溶液以及配体的一种或多种受体,其中至少一种被标记用于检测。 该试剂盒特别适用于测量人绒毛膜促性腺激素(hCG)作为怀孕的早期指标。