摘要:
An enzyme sensor system capable of quantitatively determining a particular component contained in a biological sample in a rapid and easy manner is disclosed. More particularly, an electrically conductive enzyme, an enzyme-immobilized electrode using the same and a composition for use in the preparation of the enzyme electrode are disclosed. The composition for an enzyme-immobilized electrode according to the present invention enables electrodes of various patterns to be produced by screen printing.
摘要:
A method for detecting a target nucleotide sequence at a high detection sensitivity with the use of a complementary nucleotide sequence. This method involves the step of converting the target nucleotide sequence into a partly double-stranded nucleotide sequence which is double-stranded in some parts but single-stranded in the others; and the step of detecting the partly double-stranded nucleotide sequence as described above with the use of the nucleotide sequence complementary to the target nucleotide sequence.
摘要:
An objective of the present invention is to provide a measuring chip for a surface plasmon resonance sensor that can detect a small amount of target substances in high sensitivity. The present invention provides a measuring chip for a surface plasmon resonance sensor comprising a metal layer, one or more plasma polymerization layers formed on said metal layer, and a biologically active substance immobilized on the surface of said plasma polymerization layer.
摘要:
An object of the present invention is to provide a method for detecting a target nucleotide sequence using a complementary nucleotide sequence that has an excellent sensitivity of detection. The method comprises the steps of converting the target nucleotide sequence to a partially double-stranded nucleotide sequence which is double-stranded at one part and single-stranded in the remaining part and detecting said partially double stranded nucleotide sequence using a nucleotide sequence that is complementary to the target nucleotide sequence.
摘要:
An electrode made of a metal or carbon, a working electrode (20) in contact with this electrode and of a microorganic germ-containing thin film, a counter electrode (7), and a reference electrode (5) as necessary are immersed in an organism-containing solution (30), and the BOD of this solution is measured by determining the quantity of an electric current flowing between the working electrode (20) and counter-electrode (7) or reference electrode (5), applying a voltage between the electrodes by a potentiostat (6). By this method, the concentrations of organic compounds can be measured directly without using an oxygen electrode even when the quantity of dissolved oxygen is small.
摘要:
A method for detecting a target nucleotide sequence at a high detection sensitivity with the use of a complementary nucleotide sequence. This method involves the step of converting the target nucleotide sequence into a partly double-stranded nucleotide sequence which is double-stranded in some parts but single-stranded in the others; and the step of detecting the partly double-stranded nucleotide sequence as described above with the use of the nucleotide sequence complementary to the target nucleotide sequence.
摘要:
Transfer of fluid substances, and/or substances comprised in fluid substances, is controlled by introducing a separation medium, which prevents transfer of the fluid substances, and/or the substances comprised in the fluid substances, to an intervening cavity connecting a first cavity and a second cavity; and introducing a connection medium to replace the separation medium and thereby start substance transfer to the second cavity. Substance transfer may be readily controlled without relying on mechanical means. Based on the present invention, two-dimensional electrophoretic analysis can be readily implemented on a chip.
摘要:
A sensor chip for surface plasmon resonance which has a thin metal film, an antibody against a substance with the steroid skeleton such as a steroid hormone, a sex hormone or an environmental hormone (excluding triazine compounds), and a fixation layer for fixing the antibody to the thin metal film; and a method for detecting an environmental hormone which involves the step of exposing the antibody in the above-mentioned sensor chip to a sample, the step of irradiating the thin metal film with light and the step of determining the intensity of the light reflected by the thin metal film. This method achieves a high sensitivity and an excellent selectivity.
摘要:
A method for detecting a target nucleotide sequence by a hybridization procedure with an extremely improved detecting sensitivity. This method involves the step of hybridizing the target nucleotide sequence with a PNA which is complementary to the whole target nucleotide sequence or a part thereof and the step of measuring the extent of the hybridization.
摘要:
A method for two-dimensionally separating substances characterized by using separating media independently of each other for two-dimensional separation step. A clear separation image free from distortion of the separation spot is formed. The method can be applied to two-dimensional electrophoresis for proteome analysis, and hence reproducibility can be significantly improved.