Matches 301 - 350 out of 350 < 1 2 3 4 5 6 7
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5043289 Method and device for assaying immunologically reactive substances of clinical interest  
A method and device of quantitatively assaying an immunologically reactive substance of clinical interest, wherein the method includes the steps of grafting an immunologically active substance onto...
5037649 Method for treatment of HIV-infected patients  
Patients suffering from HIV-1 infection, including both those who have and those who have not developed acquired immunodeficiency syndrome, are treated by extracorporeal removal of IgG and immune...
5017472 Microflotation devices used for immunoassays and cell/molecular fractionation  
This invention relates to a flotation immunoassay employing a novel buoyant matrix to which an antigen or antibody is coupled and which separates the bound and free products of the assay by...
5000960 Protein coupling to lipid vesicles  
A new method of coupling proteins and other targeting molecules to lipid vesicles has been developed. A bifunctional agent forms a covalent bond without damaging the lipid structure and permits...
4960715 Diagnostic test methods  
Agglutination assays, particularly latex agglutination assays, for simultaneous testing for a multiplicity of ligands. The reagents for use in the assays comprise two or more insoluble colored...
4954452 Non-metal colloidal particle immunoassay  
A method of performing a diagnostic immunoassay utilizing colloidal non-metal particles having conjugated thereto a binding component capable of specifically recognizing an analyte to be...
4952520 Immunoassay making use of latex agglutination  
An immunoassay making use of latex agglutination is practized by providing a colored latex as a latex, subjecting the colored latex to an immune reaction to form agglutinated particles of the...
4952517 Positive step immunoassay  
An assay procedure that is particularly valuable for detecting and/or determining the presence of threshold levels of analyte ligands in biological fluids. In one particularized and specialized...
4943522 Lateral flow, non-bibulous membrane assay protocols  
A method and apparatus for conducting specific binding pair assays, such as immunoassays, is described. A porous membrane capable of non-bibulous lateral flow is used as assay substrate; a member...
4880731 Process and reagent for the determination of a reaction partner of an immunological reaction  
For the determination of a reaction partner of an immunological reaction according to the principle of immunoassay, the reaction partner to be determined is brought into contact with a marked...
4871661 Process for testing the carcinogenicity of a material or the presence of cancer-inducing factors in an environment  
Materials can be screened for carcinogenic properties by administering them to test animals and assaying biological tissue, preferably plasma, for the presence of a 60K cancer-associated...
4868131 Competitive binding immunoassay process  
An immunoassay process for quantitative analysis of an analyte antigen (or analyte antibody) in an aqueous liquid sample. In the first step, the analyte antigen (or analyte antibody) is allowed to...
4859612 Metal sol capture immunoassay procedure, kit for use therewith and captured metal containing composite  
Antibody coated gold sol particles and antibody coated solid phase particles dispersed in an aqueous system react immunologically as a function of the presence of an analyte in a sample to be...
4853335 Colloidal gold particle concentration immunoassay  
A sandwich immunoassay method is disclosed that is useful for the identification of an antigen in biological specimens. The method is comprised of a colloidal gold labeled binder specific for...
4851329 Immunoassay employing optical pulse particle size analysis  
This invention provides a means for determining the concentration of any of a wide range of antibody or antigen molecules with a high degree of specificity, accuracy and sensitivity. Antigen or...
4837145 Layered immunoassay using antibodies bound to transport particles to determine the presence of an antigen  
A device is provided for determining the presence of an antigen which comprises a trapping zone, which contains material capable of capturing free flowing enzyme linked antibodies, but not...
4824777 Method for determining thyroxine uptake  
A method for determining thyroxine uptake of a sample serum comprising: (a) incubating the sample serum with solid phase thyroxine and labeled anti-TBG antibody; (b) separating the solid phase from...
4801449 Method for treatment of Kaposi's sarcoma  
An immunoadsorbent material for removing IgG and IgG-complexes from biological fluids is prepared by covalently binding protein A to a solid-phase silica matrix. It has been found that particularly...
4752568 Labeled hydantoin conjugate and its use in analytical element and immunoassays  
A heterogeneous, competitive binding immunoassay for either phenytoin or phenobarbital is conducted with a labeled conjugate comprising a derivative of hydantoin and a label. The hydantoin...
4745073 Manual immunoassays and apparatus therefor  
A cap for a container in which immunoassays are performed includes a liquid absorbing material accessible to liquid in the container.
4721681 Immunoassay in centrifugal field with complementary particles of differing specific gravities  
Competitive or inhibition assays are disclosed in which sample (e.g., containing target antigen), a reagent containing first particles (e.g., antibody-coated light particles) and a reagent...
4720465 Centrifugal kinetic agglutination assay  
A sample is mixed with a reagent containing stably suspended particles coated with a binding pair member complementary to or competitive with the target binding pair member. A centrifugal force...
4716108 Assaying anti-TP IgM antibodies for syphilis diagnosis  
A method of measuring an infectious disease antibody such as syphilis IgM, which comprises treating immunoglobulins of a sample with an anti immunoglobulin antibody sensitized on carrier particles...
4680274 Particles for inhibiting non-specific immunoreaction  
In an immunoassay, ultrafine particles having an average particle size of 0.2 μm or smaller and sensitized with a substance, which has reactivity with the materials to induce a nonspecific...
4665020 Flow cytometer measurement of binding assays  
A method of measuring the result of a binding assay that does not require separation of fluorescent smaller particles is disclosed. In a competitive binding assay the smaller fluorescent particles...
4663278 Agglutination dependent enzyme channeling immunoassay  
A novel agglutination assay is provided which brings together through the intermediacy of the binding of specific binding pair members particles which differ by having different members of a signal...
4663277 Virus detection method and materials  
Viruses are detected by means of an immunoassay method in which an extended solid phase coated with antiviral antibody is employed to bind and remove virions from a specimen by forming an...
4652533 Method of solid phase immunoassay incorporating a luminescent label  
A method is provided for solid phase immunoassay for quantitation of antigen, hapten or antibody analyte in liquid sample and alternatively for quantitation of analyte occuring on or attached to...
4650770 Energy absorbing particle quenching in light emitting competitive protein binding assays  
Assays are provided employing particles and absorbent particles, wherein the absorbent particles substantially inhibit fluorescence when bound to the fluorescent particles through specific...
4639419 Immunological color change test involving two differently colored reagent spots  
A method and device for detecting an antigenic material in which the device comprises a test utensil having an indentation in which two reagent spots are placed, the first body being a dyed...
4623618 Simultaneous quantitative immunoassay for different antigens or antibodies  
An immunoassay by which a plurality of kinds of antigens or antibodies in one test sample may be simultaneously quantified. Each of a plurality of kinds of microcapsules is first provided for each...
4590169 Direct particle agglutination immunoassays avoiding false negatives at high antigen concentrations  
A direct particle agglutination immunoassay for assaying an antigenic substance (Ag) in a fluid. The immunoassay is the type which comprises: (a) contacting the fluid with an antibody (Ab)...
4588681 Process for producing adult T cell leukemia associated antigen  
A process for producing an adult T cell leukemia associated antigen is disclosed wherein an adult T cell leukemia associated antigen producing cell is treated with a surfactant. A method for...
4582792 Immunoassay method using two immobilized biologically active substances  
A biologically active composition comprising an immobilized phase comprising an antigen or an antibody, and an immobilized phase comprising an enzyme, an enzyme inhibitor or activator, and a method...
4511662 Simultaneous assay for T and B lymphocyte populations and subpopulations  
An assay for simultaneously determining the ratio of B cells and T cells to the total cell population and subpopulations thereof present in a lymphocyte population utilizes excess amounts of B cell...
4486530 Immunometric assays using monoclonal antibodies  
"Two-site" or "sandwich" immunometric assay techniques for determination of the presence and/or concentration of antigenic substances in fluids using monoclonal antibodies are described and...
4459361 Ligand assay with one or two particulate reagents and filter  
Method of making and using products for analysis of specific ligands in solution. More specifically, a method of analyzing a sample for a ligand by incubating the sample with a ligand selective...
4451434 Transparent optical container for non-destructive biological fluid assay  
A concept and various means of immunological assay are disclosed wherein two different classes of particles which interact at short distances to produce characteristic detectable signals are...
4308026 Agglutination inhibition immunoassay for hapten using two differently sensitized particles  
An immunochemical process and the reagents for measuring hapten by using an agglutination inhibition reaction, anti-hapten antibody sensitized particles and a hapten-carrier conjugate which is...
4305925 Latex reagent  
What is disclosed is an improved nephelometric method for detecting an antigen or antibody by contact thereof in a liquid medium with particles of a latex reagent comprising latex particles of...
4279617 Iummunoassay involving agglutination  
A particle agglutination assay for antigens, antibodies and other binding proteins such as rheumatoid factor, uses two different, microscopic or submicroscopic particulate reagents. The first...
4265873 Method for typing human leukocyte antigens  
A cellular method for typing lymphocyte defined human leukocyte antigens by utilizing human blood leukocytes which have been sensitized to proliferatively respond to the secondary stimulus of the...
4235792 Immunological materials  
Immune lysis of sensitized liposomes containing a marker is employed in an assay method wherein an antigenic material to be determined is reacted with a specific antiserum and the degree of...
4223005 Antibody coated bacteria  
Process for identification and enumeration of B and T lymphocytes in an unseparated peripheral body sample comprises contacting the sample with two morphologically distinguishable bacteria, each of...
4191739 Antigen-antibody reaction assay employing particle aggregation and resistive pulse analysis  
In a mixture of two antibody-coated latex particle suspensions, the particles in each suspension being of a different size, respectively, absence of antigen specific to the antibody in the mixture...
4184849 Mixed agglutination  
The presence of antibodies (Ab) and antigens (Ag) in a liquid is detected by mixing the liquid with two different particulate reagents which mutually agglutinate but whose agglutination is...
4115535 Diagnostic method employing a mixture of normally separable protein-coated particles  
A mixture of two different kinds of particles having distinctive, different properties is employed for determining the presence of a select protein in, or the absence of a select protein from, a...
4038378 Radioimmunoassay for hepatitis B antigen  
The presence of hepatitis B antigen in serum or plasma can be detected by this technique. Commercially available imitation or cultured pearls coated with antibody to hepatitis B antigen are first...
3917527 Hydrophobic chromatography  
Biomolecules such as peptides, vitamins, hormones, lipids, proteins and enzymes as well as membranes, cells and the like are separated and purified using one or more members of a homologous series...
3675768 METHOD AND APPARATUS FOR CLASSIFYING AND SEGREGATING PARTICLES WITH ELECTRICAL AND OPTICAL MEANS  
Apparatus for classifying, counting and segregating microscopic particles such as cells. The particles may be contained in a gas or liquid and may be classified by measuring two characteristics...
Matches 301 - 350 out of 350 < 1 2 3 4 5 6 7