Abstract: An affinity carrier may have improved alkali resistance. An immunoglobulin-binding protein containing a mutant polypeptide chain, as well as an affinity carrier containing a solid-phase carrier to which the immunoglobulin-binding protein is bound, may be a mutant polypeptide chain having an amino acid sequence having at least 85% identity to an amino acid sequence indicated by any of SEQ ID NO: 1-6 and 57-62, having a predetermined mutation, and having immunoglobulin-binding activity.

Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased alkali tolerance, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.

Abstract: To provide a chromatography carrier that has excellent antifouling properties and exhibits excellent pressure-resistant performance and shatter-resistant performance. A chromatography carrier comprising: a polymer having a partial structure containing at least two groups represented by —C(?O)—NH—.

Abstract: The present invention relates to composite particles, coated particles, a method of producing composite particles, a ligand-containing solid phase carrier, and a method of detecting or separating a target substance in a sample. The above described composite particles each contains an organic polymer and inorganic nanoparticles, wherein the content of the inorganic nanoparticles in the composite particles is more than 80% by mass, and wherein the composite particles have a volume average particle size of from 10 to 1,000 nm.

Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased antibody dissociation rate under acidic conditions, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.

Abstract: To provide a novel technique with which the generation of aggregates over time in a dispersion liquid can be suppressed and a target substance can be detected with high sensitivity even if latex particles that have been stored are used. A method for storing in a container a latex particle dispersion liquid in which latex particles for an extracorporeal diagnostic agent are dispersed, the latex particles having a volume average particle size of 10 to 1000 nm and including a polymer containing 70 to 100% by mass of monomer units each derived from a monomer having an aryl group relative to the total monomer units, which is characterized in that the particle dispersion liquid is stored in the container by setting a ratio of a volume of a void space obtained by excluding a volume occupied by the particle dispersion liquid from an internal volume of the container to 0 to 25% (v/v) relative to the internal volume of the container.

Abstract: The present invention relates to a magnetic particle dispersion, and the magnetic particle dispersion includes a magnetic particle, an isothiazoline compound, and an aqueous medium.

Abstract: This invention relates to a method of producing a probe-bound carrier, a probe-bound carrier and a method of detecting or separating a target substance. The method of producing a probe-bound carrier includes: step 1 of mixing a carrier having tosyl groups and a probe; and step 2 of reducing the amount of tosyl groups on a surface of a carrier, in which a proportion of area S2 that is occupied by one tosyl group on a surface of the carrier obtained in the step 2 with respect to area S1A that is occupied by one tosyl group on a surface of the carrier used in the step 1 (S2/S1A×100%) is not less than 140%.

Abstract: Photoresist additive polymers and photoresist formulations that can be used in immersion lithography without the use of an additional topcoat. The resist compositions include a photoresist polymer, at least one photoacid generator, a solvent; and a photoresist additive polymer. Also a method of forming using photoresist formulations including photoresist additive polymers.

Abstract: One method includes porous low k pore sealing that uses a combination of materials that bond and expand, thereby covering any pore or irregularities in the surface of an insulator adjacent to a conductor. The materials form a substantially impermeable barrier between the conductor and insulator that prevents leakage of the conductor into the insulator. Another method encapsulates the conductor on all exposed surfaces with an impermeable barrier before placement of an insulator, thereby preventing both anode extrusion and diffusion via pores in the insulator.