Abstract: The present invention relates to a method of internal correction in one chip assay, and to a method for measuring a test substance using the method of internal correction. Specifically, an assay system for measuring a test substance and an assay system for measuring an internal standard substance on a single chip are implemented to thereby internally correct measurement values of a test substance. Normalizing measurement values of a test substance using this internal correction quantifies the test substance.

Abstract: An immunochromatographic test piece measuring a concentration of a measurement object included in a solution includes a carrier causing the solution that includes the measurement object to flow from an upstream to a downstream of the carrier, and a plurality of color regions arranged at the carrier in series in a flow direction in which the solution flows through the carrier and spaced away from one another in the flow direction. The plurality of color regions each includes a capture reagent and is colored while capturing the measurement object included in the solution by the capture reagent. The plurality of color regions is formed at respective portions of the carrier, the respective portions having same dimensions and including same concentrations of the capture reagent per unit area.

Abstract: A chromatography device includes a sample introducing portion for introducing a sample in a liquid state and provided at an upstream side of a flow of the sample, a developing means including a creatinine detecting portion, at which a creatinine detection reagent for detecting creatinine in the sample is provided, and a substance-to-be-detected detecting portion, at which a substance-to-be-detected detecting reagent for detecting a substance included in the sample is provided, and a liquid absorbing portion for absorbing liquid included in the sample in order to allow the sample to flow to a down stream side towards the liquid absorbing portion, wherein the sample introducing portion, the developing means and the water absorbing portion are provided on a board in this order from the upstream side to the downstream side in order to quantify the substance, which is included in the sample and which is to be detected.

Abstract: In a biological information inspection system capable of accumulating highly reproducible biological information in a plurality of inspection means and making a multifactorial analysis of related information, simplification and downsizing of the system is achieved. The biological information inspection system 10 of the present invention comprises a sensor chip 20 holding a sample such as genes, a sensor chip holding portion 11 in which the sensor chip 20 is placed, and a data reading portion 13 for acquiring image data of a detection portion 21 and a marker portion 21 of the sensor chip 20. The system further comprises a data calculation unit 16 for executing a plurality of programs for acquiring biological information data from the image data of the detection portion 21. Which of the inspection means the sensor chip 20 corresponds to is identified from the read image data of the marker portion 23.

Abstract: A microchannel chip system and a detection chip capable of improving detection precision are provided. The detection chip 1 of the microchannel chip system comprises a carrier retention section 13 capable of retaining a carrier supporting a second chemical substance which generates a signal by reacting with a first chemical substance and a microchannel flow channel 10 provided with a supply flow channel 14 which supplies a liquid material containing the first chemical substance to the carrier retention section 13. A carrier mobilization means (a protrusion 2) is provided for enhancing of the reactivity of the second chemical substance supported in the carrier 9 with the first chemical substance contained in the liquid material by moving the carrier retained in the detection chip 1.

Abstract: A color image analysis method makes it possible to analyze plural components of a compound individually through formation of an image. Initially, a picture or the image of the compound including the plurality of components is taken by a fluorescence digital image microscope. Then, one or more images of one of the components are extracted or divided from the image of the compound on the basis of color-phase, or color-phase and brightness.

Abstract: A color image analysis method makes it possible to analyze plural components of a compound individually through formation of an image. Initially, a picture or the image of the compound including the plurality of components is taken by a fluorescence digital image microscope. Then, one or more images of one of the components are extracted or divided from the image of the compound on the basis of color-phase, or color-phase and brightness.

Abstract: A method for working in a specimen includes the steps of (a) putting the specimen on a stage; (b) irradiating radiation to the specimen for excitation; (c) recording detected characteristics of the excited specimen by the radiation; (d) displaying the recorded characteristics on the stage; (e) storing the recorded characteristics of the excited specimen; (f) maintaining display of the stored characteristics on the stage; and (g) working on the specimen on the stage over the displayed characteristics. An operator may easily access to the specimen with a scalpel or a knife since the detected characteristics are displayed on the stage after the detection of the characteristics. Even if the detection requires harmful radiation such as ultraviolet light, the operator may work in the specimen after turning off such harmful radiation. Therefore, the operator does not have to wear any protection against the harmful radiation so as to work in the specimen more easily and efficiently.

Abstract: A method of detecting nucleic acids, proteins, or protein nucleic acid complexes. The method includes binding an enzyme, such as phosphatase, to a specimen of the nucleic acid, protein, or protein nucleic acid complex. The enzyme is then reacted with a fluorescein derivative phosphate ester to obtain a fluorescein derivative phosphate ester hydrolysate. The hydrolysate is then irradiated with excitation light, and the emitted fluorescein is detected.

Abstract: A method of detecting nucleic acid utilizes hybridization between the nucleic acid to be detected which is present on an immobilizing support and a DNA probe which is complementary to at least a portion of the desired nucleotide sequence of the nucleic acid. The present DNA probe includes a hapten attached via a linker which a hapten is gibberellin or a gibberellin derivative. After hybridization by reaction between the nucleic acid to be detected and the DNA probe, the unreacted DNA probe is removed, and then labelled anti-hapten antibody is allowed to bind with the DNA probe of the hybrid and the labelling is used to detect the nucleic acid.Accordingly, stable detecting sensitivity may be achieved regardless of the label mixing ratio or labelling ratio, and thus regardless of the nucleotide sequence composition of the nucleic acid being tested.

Abstract: A method for assaying nucleic acids or similar compounds comprises binding a sample such as a nucleic acid to phosphatase; reacting the phosphatase with a 3-hydroxy-2-naphthoic acid-2'-phenyl anilide phosphate; irradiating the reaction product with an excited light; and detecting fluorescence emitted therefrom.

Abstract: Methods for detecting nucleic acids in a sample, using naphthol derivative phosphates, are provided. Nucleic acids present in a sample are contacted with phosphatase, producing a modified phosphatase. A naphthol derivative phosphate is contacted with the modified phosphatase to produce a reaction product. Any reaction product formed is detected by irradiating it with an excited light and detecting a fluorescence emitted from the reaction product. Naphthol derivative phosphates useful in these methods are also provided. Methods for production of naphthol derivative phosphates are also provided.

Abstract: An easy operable method of detecting phosphatase which comprises a step for the production of a dye to obtain an azo dye by the reaction of phosphatase in a tissue or cell or on chromosome with a 2'-naphthol AS phosphate, specifically, 3-hydroxy- N-2'-biphenyl-2-naphthalenecarboxamide phosphate ester, followed by the reaction between the dephosphorylated 2'-naphthol AS compound with a diazonium salt; an excitation step for the irradiation of excited light to the azo dye; and a detection step for the detection of fluorescence which is emitted upon irradiation of the excited light. The fluorescence is intense and lasts for a long time.

Abstract: Method for assaying nucleic acids and proteins employing no radiosotope labeling, which is suitable for data storage and allows to carry out the detection efficiently and high sensitivity. The sample selectable from the group of nucleic acids, proteins, and other chemical compounds is adhered on a nylon membrane filter to be bound to a phosphatase. Then the phosphatase is reacted with an anthracene derivative phosphate followed by irradiating the reaction product with ultraviolet light to detect a fluorescence emitted therefrom.

Abstract: An electrophoresis pattern analyzer for genetic material of this invention comprises: an image data generating means for optically reading an electrophoresis specimen and outputting datum image data corresponding to a datum region and sample image data corresponding to at least one sample region; a datum band pattern retrieving means for retrieving datum band patterns concerning position coordinates of the bands of the datum region in the direction of electrophoresis and two-dimensional forms of the bands of the datum region from the datum image data; a sample band pattern retrieving means for retrieving sample band patterns concerning position coordinates of the bands of the sample region in the direction of electrophoresis and two-dimensional forms of the bands of the sample region from the sample image data; and a band pattern comparing means for comparing the datum band patterns with the sample band patterns and determining characteristics of the sample region.