摘要:
This process involves the use of benzoquinone as cross-linking agent in large excess compared with the substance to be activated. The activation reaction is realized in a homogeneous liquid medium. Said process making it possible for example to couple antibodies to enzymes for determining or detecting said antibodies. The process can be used for the determination of antitetanic antibodies in human serum.
摘要:
This process involves the use of benzoquinone as cross-linking agent in large excess compared with the substance to be activated. The activation reaction is realized in a homogeneous liquid medium. Said process making it possible for example to couple antibodies to enzymes for determining or detecting said antibodies.The process can be used for the determination of antitetanic antibodies in human serum.
摘要:
A process for coupling biological substances by covalent bonds that involves the use of benzoquinone as cross-linking agent in large excess compared with the substance to be activated. The activation reaction is realized in a homogeneous liquid medium. The process makes it possible, for example, to couple antibodies to enzymes for determining or detecting said antibodies.The process can be used for the determination of antitetanic antibodies in human serum.
摘要:
A solution of an active protein substance and an inactive protein substance is reacted with a cross-linking agent, optionally in the presence of an inert carrier, under cross-linking conditions to produce articles comprising both active and inactive protein substances. The active protein substance comprises up to about 20 percent, e.g. from 1 to 20 percent by weight, based on the final weight of the total protein substance, whereas the cross-linking agent comprises from 0.5 to 8 percent by weight, based on the weight of the total treated mixture. The obtained articles are in the form of a solution or a suspension in aqueous medium, in the form of a film, in the form of a membrane, in the form of a fabric, in the form of a porous material, or in the form of a mass, such as granules, pills or tablets.
摘要:
Method for detecting the possible presence of a DNA fragment, notably of a gene, in the midst of a complex sample of nucleic acids.It comprises the hybridization of the sought fragment with a RNA probe, this being, prior or subsequent to the hybridization reaction, modified by an enzyme.Application to seeking of particular genes or DNA fragments in the midst of a biological sample.
摘要:
The present invention provides novel polypeptides which can effectively penetrate into cells thereby transporting a substance of interest into the cells.
摘要:
A process for the detection of a biological substance immobilized on a support including(1) incubating, after washing, the substance immobilized on a support with the product of coupling of a specific ligand with a ligand capable of reacting with erythrocytes;(2) adding erythrocytes;(3) immersing the whole in a solution of a fixing agent and(4) measuring the erythroadsorption, after having turned the support over in order to permit the removal of the red cells which have not reacted.
摘要:
The invention relates to a magnetic gel which is useful for immunoezymatic determinations.Said gel consisting, for example, of polyacrylamideagarose and magnetic particles, coupled with an antibody, can be used for rapid determinations of the antigens contained in a biological liquid, the presence of magnetic particles permitting rapid separation of the gel from the reaction medium by means of a magnetic field and considerably shortening the time required for determinations.
摘要:
The present invention provides novel polypeptides which can effectively penetrate into cells thereby transporting a substance of interest into the cells.
摘要:
Method for detecting the possible presence of a DNA fragment, notably of a gene, in the midst of a complex sample of nucleic acids.It comprises the hybridization of the sought fragment with a RNA probe, this being, prior or subsequent to the hybridization reaction, modified by an enzyme.Application to seeking of particular genes or DNA fragments in the midst of a biological sample.