摘要:
A surface on which adsorption of protein (e.g., BSA) is markedly suppressed is provided, by contacting solutions of polymers whose chief component is poly(ethylene oxide) having binding sites to sensor surfaces with biosensor surfaces plural times to link the polymers.
摘要:
A surface on which adsorption of protein (e.g., BSA) is markedly suppressed is provided, by contacting solutions of polymers whose chief component is poly(ethylene oxide) having binding sites to sensor surfaces with biosensor surfaces plural times to link the polymers.
摘要:
This invention provides latex particles wherein non-specific adsorption or binding of undesired impurities which usually accompanies the use of latex particles is inhibited, and a process to produce such latex particles. This invention also provides diagnostic agent which contains said particles. In another embodiment, this invention provides latex particles comprising both a ligand group-holding site which has a ligand group on the one terminal and is bound, on the other terminal, to latex particles, and which has a long chain of polyoxyethylene; and a non-specific adsorption-inhibiting site which is bound, at one terminal, to latex particles, and which has a short chain of polyoxyethylene. In this embodiment, this invention also provides a process to produce said particles.
摘要:
This invention provides a method to detect analyte which comprises preparing fine particles which have a chargeable group in their core and a hydrophilic polymer chain in their shell; obtaining an agglutinated matter by forming a biologically specific bond between a specific residue on the surface of fine particles and analyte, and by simultaneously forming a bond by the electrostatic interaction between impure protein and said particles; and subsequently cleaving only the latter bond by raising ionic intensity. Thus, this invention provides a method to detect analyte with rapidity and high sensitivity with use of agglutination reaction.
摘要:
A substrate surface on which either a substance to detect analyte or an analyte per se is immobilized, which surface is formed by a treatment of substrate surface with a liquid which contains uncrosslinked polymer based on polyethylene glycol chain segment, said treatment conducted either simultaneously with the immobilization of said substance or analyte or after said substance or analyte has been immobilized on said surface. The non-specific adsorption of impurity protein or the like which is co-existent in sample for assay is significantly restrained.
摘要:
A substrate surface on which either a substance to detect analyte or an analyte per se is immobilized, which surface is formed by a treatment of substrate surface with a liquid which contains uncrosslinked polymer based on polyethylene glycol chain segment, said treatment conducted either simultaneously with the immobilization of said substance or analyte or after said substance or analyte has been immobilized on said surface. The non-specific adsorption of impurity protein or the like which is co-existent in sample for assay is significantly restrained.
摘要:
This invention provides a method to detect analyte which comprises preparing fine particles which have a chargeable group in their core and a hydrophilic polymer chain in their shell; obtaining an agglutinated matter by forming a biologically specific bond between a specific residue on the surface of fine particles and analyte, and by simultaneously forming a bond by the electrostatic interaction between impure protein and said particles; and subsequently cleaving only the latter bond by raising ionic intensity. Thus, this invention provides a method to detect analyte with rapidity and high sensitivity with use of agglutination reaction.
摘要:
A conjugate which comprises fine porous particles (on which functional substance may be adhered) and a polymer based on water-soluble high molecular chain segment, and the use of the conjugate (for the purpose of stably supporting, or slowly releasing, a physiologically active substance, or the like).