Abstract: A problem to be solved is to provide an immunochromatographic test strip in which a specimen sufficiently and quickly permeates into a sample application region within a test time so that variations in detection values of a test line can be prevented. Particularly, a problem to be solved is to provide an immunochromatographic test strip causing less variations in detection values even when the specimen is whole blood. The problems are solved by providing an immunochromatographic test strip including at least a sample application region, a development region, and a detection region, wherein the sample application region contains polyethylene glycol having a molecular weight of 15,000 to 700,000.

Abstract: A problem to be solved is to provide a test strip capable of avoiding occurrence of a so-called bleaching phenomenon in an immunochromatographic test strip to enable better detection and visibility. Another problem to be solved is to provide an immunochromatographic test strip capable of preventing a variation in detection value on a test line. The problems are solved by an immunochromatographic test strip including at least a porous membrane and having a sample application region, a development region, and a detection region in which a specific binding substance is immobilized, wherein the detection region is immobilized on a front surface of the porous membrane, and wherein an opaque base material having a thickness of 30 ?m or more and 200 ?m or less is placed on the back surface of the porous membrane.

Abstract: A problem to be solved by the present invention is to provide an immunochromatographic test strip capable of avoiding so-called blank color development in an immunochromatographic test strip and enabling more accurate determination by an approach different from the prior arts. The present invention provides an immunochromatographic test strip comprising: at least a sample application region, a development region, and a detection region in which an antibody is immobilized, wherein the detection region includes the antibody and one or more saccharides selected from the group consisting of a reductive monosaccharide and a reductive disaccharide.

Abstract: The present invention addresses the problem of making it possible, in a simple immunoassay, to prevent false-positive reactions and reduce measurement value errors so as to accurately detect fFN by suppressing a cross-reaction with plasma FN that is an antigenic component similar to fFN to reduce the detection of plasma FN. When an anti-fFN antibody reacts with fFN in the presence of a specific surfactant according to the present invention, it is possible to accurately detect fFN through the suppression of the cross-reaction between the antibody and FN, even when other FNs such as plasma FN are also present. The specific surfactant is represented by general formula (1): R—O—(CH2CH2O)mH??(1) In the formula, m is 4-30, and R represents an alkyl group.

Abstract: The present invention addresses the problem of suppressing cross-reaction with antigenic components similar to an analyte, in immunochromatography, so as to reduce detection of similar antigens, and prevent measurement value errors and false positive reactions, while maintaining or improving the detection sensitivity for the analyte, and thereby allowing accurate determinations. In the present invention, when an antibody that specifically binds to the analyte and the analyte are reacted under conditions in which a buffer solution is used in a specific pH range, even if similar antigens are also present, cross-reactivity between the antibody and similar antigens is suppressed, and the analyte can be accurately detected.

Abstract: A method of producing a retardation plate includes the steps of applying a solution containing a resin B and a solvent to an optical base material containing a resin A to obtain a laminate including an optical base material layer and an application layer, and stretching the laminate, in which one of the resin A and the resin B has positive alignment birefringence, and another one of the resin A and the resin B has negative alignment birefringence, and the stretching is performed by setting an amount of a residual solvent in the laminate to be 2 to 10% by weight.

Abstract: Provided is a method capable of setting an appropriate stretching temperature even in the case where the difference in Tg of resins contained in respective layers is large and the case where the thickness of a laminate is large when a retardation plate having reverse dispersion characteristics is produced by stretching a laminate, and capable of obtaining a retardation plate which can express a sufficient retardation and in which retardation unevenness is reduced.

Abstract: A liquid crystal panel including a liquid crystal cell having an improved contrast ratio in an oblique direction and an improved color shift in an oblique direction is provided. A liquid crystal panel according to the present invention includes: a liquid crystal cell; a first polarizer arranged on one side of the liquid crystal cell; a second polarizer arranged on another side of the liquid crystal cell; a negative C plate and a negative A plate arranged between the liquid crystal cell and the first polarizer; and an isotropic optical element arranged between the liquid crystal cell and the second polarizer. The negative C plate is arranged between the first polarizer and the negative A plate.

Abstract: A liquid crystal panel including a liquid crystal cell having an improved contrast ratio in an oblique direction and an improved color shift in an oblique direction is provided. A liquid crystal panel according to the present invention includes: a liquid crystal cell; a first polarizer arranged on one side of the liquid crystal cell; a second polarizer arranged on another side of the liquid crystal cell; a negative C plate and a negative A plate arranged between the liquid crystal cell and the first polarizer; and an isotropic optical element arranged between the liquid crystal cell and the second polarizer. The negative C plate is arranged between the first polarizer and the negative A plate.