摘要:
A composition and process for permitting the separation of plasma or serum from whole blood. The composition includes glass fibers having an average diameter of from 0.2.mu. to 5.mu. and a density of 0.1 g/cm.sup.2 to 0.5 g/cm.sup.2. The process includes the steps of slowly trickling whole blood onto one side of a layer composed of the composition of glass fibers, whereby plasma or serum separated from the blood becomes available at another side of the layer. The total volume of the plasma or serum separated from the blood is limited to at most 50% of the absorption volume of the glass fiber layer.
摘要翻译:允许血浆或血清从全血分离的组合物和方法。 该组合物包含平均直径为0.2〜5μm,密度为0.1g / cm 2〜0.5g / cm 2的玻璃纤维。 该方法包括以下步骤:将全血慢慢滴入由玻璃纤维组合物组成的层的一侧,从血液中分离的血浆或血清在层的另一侧可用。 从血液分离的血浆或血清的总体积被限制在玻璃纤维层的吸收体积的至多50%。
摘要:
Azo dyestuff ester of the formulaA--N.dbd.N--B(OR).sub.nwhereinA is a five- or six-membered heterocyclic radical of up to 2 hetero ring atoms selected from nitrogen, sulfur and oxygen, and wherein the heterocyclic ring may be substituted with at least one member of the group selected from halogen, lower alkyl and lower alkoxy; orA is phenyl substituted by at least one member of the group selected from lower alkyl, lower alkoxy, nitro, sulphanato and acylamino;B is benzene, naphthalene or quinoline, optionally substituted with one or two radicals selected from sulphanato, lower alkoxy and lower alkoxypoly-alkyleneoxy;R is a carboxylic acid residue or an amino acid or peptide residue having a nitrogen protective group; andn is 1 or 2.This dyestuff is particularly useful as a chromogen in a diagnostic composition for detecting leukocytes in body fluids.
摘要:
Novel diagnostic composition for the detection of leukocytes in body fluids, comprising an absorbent carrier impregnated with a buffer substance and a chromgen, wherein the chromogen is an azo dyestuff ester of the formulaA--N.dbd.N--B(OR).sub.nwhereinA is a five- or six-membered heterocyclic radical of up to 2 hetero ring atoms selected from nitrogen, sulfur and oxygen, and wherein the heterocyclic ring may be substituted with at least one member of the group selected from halogen, lower alkyl and lower alkoxy; orA is phenyl substituted by at least one member of the group selected from lower alkyl, lower alkoxy, nitro, sulphanato and acylamino;B is benzene, naphthalene or quinolone, optionally substituted with one or two radicals selected from sulphanato, lower alkoxy and lower alkoxypoly-alkyleneoxy;R is a carboxylic acid residue or an amino acid or peptide residue having a nitrogen protective group; andn is 1 or 2.
摘要:
The present invention provides a diagnostic agent for the detection of proteolytic enzymes, comprising an absorbent carrier, a film layer, a powder mixture, a lyophilisate, a solution or a reagent tablet, containing at least one chromogen and an appropriate buffer substance, wherein the chromogen used is an indoxyl- and/or thioindoxyl-amino acid ester and/or peptide ester of the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which can be the same or different, are hydrogen or halogen atoms, lower alkyl, lower alkoxy, aryl, aralkyl, aralkoxy, hydroxyl, carboxy, carboxy lower alkoxy, aralkoxycarbonyl, aralkyloxycarbonyl lower alkoxy, nitro or lower acylamino radicals, whereby two adjacent substituents can also represent an optionally halogenated fused benzene ring, X is a sulphur atom or an imino group optionally substituted by a lower alkyl, aryl, aralkyl or acyl radical, A is an amino acid or peptide residue and B is a nitrogen protective group conventional in peptide chemistry or derived therefrom.The present invention also provides new compounds of the above-given general formula and processes for the preparation thereof.Furthermore, the present invention is concerned with the use of the compounds of the above-given general formula for the production of diagnostic agents for the detection of proteolytic enzymes.
摘要:
On a carrier layer there are arranged several test layers which are at least partly in fluid contact with one another, enabling liquid exchange. On the carrier layer are arranged an application zone, a detection zone for the production of a detectable signal characteristic of the analytical determination, which contains at least one said test layer which is a reaction layer, and an absorption zone with a test layer which is an absorptive layer of an absorbent material, wherein the reaction layer and absorption zone are positioned next to each other. Between the application and the absorption zone is a capillary-active transport path on the carrier layer which connects the application zone and the absorption zone. The reaction layer is arranged parallel to the transport path between the application zone and the absorption zone in such a manner that it is in liquid contact with a liquid transported in the transport path. The absorption zone therefore absorbs excess liquid and permits dosing the reaction layer with a reproducible amount of sample.
摘要:
A test support for support-bound tests for the determination of components of fluids, especially of human and animal body fluids. The test support is composed of a plurality of layers, and the joining of the layers is accomplished at least partially by sewing.
摘要:
Esters and agents including the esters, useful as substrates for esterolytic and/or proteolytic enzymes, said esters being compounds of the general formula: ##STR1## in which R".sub.1, R".sub.2, R".sub.3 and R".sub.4, which may be the same or different, are hydrogen atoms or lower alkyl, lower alkoxy, alkylamino or dialkylamino radicals or in which two adjacent substituents can also represent a fused benzene ring, A is a residue of an amino acid or of a peptide and B is a nitrogen protective group conventional in peptide chemistry or derived therefrom and the method of preparation and use.
摘要:
This invention relates to diagnositc agents and methods for the detection of leukocytes in body fluids. In additional aspect, the invention provides a process for the production of such diagnostic agents.
摘要:
A method of coding a Web page for improving accessibility for a disabled user using assistive technology to read the Web page, includes coding a first element on a Web page and modifying the first element to include at least one coding block in a language not effected by a scripting control setting on a browser used to display the Web page and configured to skip the first element responsive to receiving a skip request from the disabled user.