Abstract:
The invention relates to a method of determining an analyte in a sample, especially a high concentration analyte, comprises the steps of: a) contacting the sample with a specified amount of a receptor which binds specifically to the analyte to form an analyte/receptor complex, said specified amount of receptor being in excess of that required to bind all analyte in the sample, b) isolating on a solid phase a specified fraction of the amount of receptor contacted with the analyte, including analyte/receptor complex and unreacted receptor, c) detecting the amount of analyte/receptor complex in said isolated specified fraction, and d) from the detected amount analyte/receptor complex, determining the concentration of analyte in the sample. The invention also relates to test kits for carrying out the method.
Abstract:
The present invention relates to an immunoassay and a method for the determination of antigens, in which an antigen is bound to a specific antibody, the conjugate formed is reacted with an immobilized capture antibody which recognizes and binds the non-bound antibody and the quantity of free or bound antibody is determined in the supernatant or on the matrix.
Abstract:
The present invention relates to a method for predicting or stratifying the risk of morbidity and/or mortality in a chronic heart failure patient. Levels of 1,25-dihydroxyvitamin D (1,25(OH) 2 D) are measured in a biological sample and taken together with parathyroid hormone (PTH) levels to provide a ratio indicative of risk of chronic heart failure morbidity and/or mortality.
Abstract:
Methods, apparatuses, and compounds for screening or detecting binding of candidate peptides to an MHC protein is provided. A first component including at least one candidate peptides and a second component including at least one MHC protein are contacted. One of the components is immobilized on a solid support. The presence, absence, or quantity of binding of the peptide and said MHC protein is then determined.
Abstract:
A method for the multiplexed diagnosis of a plurality of different biomolecules in a fluid sample substantially simultaneously is provided. In accordance with a method of the invention, a substantial fraction of biomolecules in a fluid sample are complexed with a universal label and a secondary labeling reagent. Flow cytometric measurements may be used to identify and quantify, in real-time, by detecting the secondary reagent and universal label present in any of said complexes. The inventive technology enables the simultaneous, and automated, detection and interpretation of multiple biomolecules while also reducing the cost of performing diagnostic and genetic assays.
Abstract:
The invention provides compositions and methods for cell separation. These reagents and techniques specifically agglutinate cells via surface antigen recognition and can be used to recover even rare cell types in high yield.
Abstract:
The present invention concerns an in vitro method for measurement of 25-hydroxyvitamin D, wherein the potentially interfering compound 24,25-dihydroxyvitamin D 3 is blocked by a binding agent specifically binding to 24,25-dihydroxyvitamin D 3 and not binding to 25-hydroxyvitamin D.
Abstract:
Disclosed are methods for shearing and tagging chromatin DNA. The disclosed methods include contacting chromatin DNA with at least one transposome, that includes a transposase enzyme. The transposon is made up of a first DNA molecule that includes a first transposase recognition site and a second DNA molecule that includes a second transposase recognition site, wherein the transposase integrates the first and second DNA molecules into chromatin DNA. The first and second DNA molecules of the transposon can be disconnected, such that upon integration of the transposon the chromatin bound DNA is sheared and tagged with the first and second DNA molecules, for example to prepare a library of sheared and tagged chromatin DNA fragments.
Abstract:
The present invention provides an external standard in the form of a nucleic acid-antibody complex to be used in a chromatin immunoprecipitation method.
Abstract:
A composition-of-matter comprising at least one ligand capable of binding a target molecule or cell of interest is provided, The composition comprising the at least one ligand being a composite ligand which comprises a scaffold moiety attached to at least one target recognition moiety capable of directly or indirectly binding the target molecule, cell or virus, the at least one ligand being attached to at least two coordinating moieties selected capable of directing the composition-of-matter to form a non-covalent complex when co-incubated with a coordinator ion or molecule.