摘要:
A microtiter plate prepared from a hydrophobic plastic is rendered more hydrophilic by treatment of the surfaces of the wells of the microplate prior to use. The resulting plates are particularly useful in vertical beam photometry.
摘要:
The present invention encompasses a capture membrane comprising a porous filter membrane having a hapten bound directly or indirectly to the membrane wherein complexes formed by specific binding having an anti-hapten bound to a binding member of the specifically binding complex are removed from a solution by the hapten as the solution passes through the membrane. In the preferred embodiment biotin is the hapten and avidin or streptavidin is the anti-hapten.
摘要:
A method of assaying bone collagen breakdown levels in a human subject useful to screen for the presence of bone resorption disorders. Also disclosed is a method for monitoring the progression and/or treatment response of a cancer condition which involves or has the potential to progress to a metastatic condition which involves abnormalities in bone resorption rates.
摘要:
A liposome assay reagent for determination of an analyte in a homogeneous immunoassay. The reagent includes a suspension of oligolamellar lipid vesicles containing encapsulated glucose-6-phosphate dehydrogenase (G6PD), at a specific activity of between about 1-15 units/.mu.mole vesicle lipid, and glucose-6-phosphate (G6P) at a concentration of at least about 5 mM. The encapsulated G6P protects the enzyme against inactivation on preparation, by reverse phase evaporation in the presence of organic solvent, and on storage as an aqueous suspension.
摘要:
A liposome assay reagent for determination of an analyte in a homogeneous immunoassay. The reagent includes a suspension of oligolamellar lipid vesicles containing encapsulated glucose-6-phosphate dehydrogenase (G6PD), at a specific activity of between about 1-10 units/.mu.mole vesicle lipid, and glucose-6-phosphate (G6P) at a concentration of at least about 5 mM. The encapsulated G6P protects the enzyme against inactivation on preparation, by reverse phase evaporation in the presence of organic solvent, and on storage as an aqueous suspension.
摘要:
Compounds and methods for detecting the incorporation of a hapten into a protein or macromolecule are disclosed. The compounds comprise haptens bound directly or indirectly to a chromophoric group and a macromolecule-reactive group, whereby incorporation of the hapten into a protein or other macromolecule may be detected.
摘要:
A method of assaying a human urine sample, by measuring a concentration of pyridinium crosslinks from which the concentration of total hydrolysed pyridinoline in the sample can be determined, is disclosed. In the method, a urine sample is reacted with an anti-Pyd antibody reagent which preferably has a ratio of reactivity toward native free pyridinoline and urinary pyridinoline peptides larger than 1,000 daltons in molecular weight, of greater than 10:1. By measuring the extent of immunocomplex formed by the reaction, the concentration of total hydrolysed pyridinoline in the sample can be calculated. Also disclosed are an antibody reagent and kit which can be used in the method.
摘要:
Compounds and methods for detecting the incorporation of a hapten into a protein or macromolecules are disclosed. The compounds comprise haptens bound directly or indirectly to a chromophoric group and a macromolecules-reactive group, whereby incorporation of the hapten into a protein or other macromolecules may be detected. The disclosure includes a compound of the formula: ##STR1## wherein n.sub.1 is 1, 2, 3, 4, 5, 6 or 7;n.sub.2 is 0, 1, 2, 3, 4, 5, 6 or 7;R.sub.1 is either a carboxytetramethyl-rhodamyl, sulforhodamyl101, or dinitrophenylaminohexanoyl group; andR.sub.2 is --CO.sub.2 H, --NH.sub.2, --SH, ##STR2##
摘要:
An enhanced agglutination assay method for determination of a multivalent analyte is disclosed. Analyte is added to agglutinatable particles coated with anti-analyte molecules to produce particle agglutination. The extent of agglutination is enhanced by mixing the particles and analyte with an analyte-binding reagent composed of lipid bodies. The reagent bodies act by promoting multiple analyte bridge connections between individual bridged particles and a reagent body. Also disclosed is a kit containing such particles and reagent.
摘要:
An agglutination assay reagent and method. The reagent is composed of liposomes predominantly in the 1 to 20 micron diameter size range. Each liposome has a surface array of laterally mobile ligand molecules, at a surface concentration adapted to produce reagent agglutination within about 5 minutes, when the reagent is incubated at room temperature with a multivalent ligand-binding analyte. A dye in the liposomes allows such agglutination to be visualized easily without magnification.