摘要:
Devices and methods are provided for precise production of arrays of microspots. A pulse jetting device is employed having a capillary of micron dimensions, with a portion of the capillary proximal to the jetting orifice circumferentially surrounded by a piezoelectric transducer. By appropriate design of the capillary, orifice and piezoelectric transducer, droplets can be formed on a surface, separated by as little as 80 microns center-to-center, and having at least about a 15 micron spacing at the border. The subject substrate arrays can be used for providing miniaturized arrays of reagents, such as nucleic acids, for detecting the presence of homologous sequences in a sample.
摘要:
Devices and methods are provided for precise reduction of arrays of microspots. A pulse jetting device is employed having a capillary of micron dimensions, with a portion of the capillary proximal to the jetting orifice circumferentially surrounded by a piezoelectric transducer. By appropriate design of the capillary, orifice and piezoelectric transducer, droplets can be formed on a surface, separated by as little as 80 microns center-to-center, and having at least about a 15 micron spacing at the border. The subject substrate arrays can be used for providing miniaturized arrays of reagents, such as nucleic acids, for detecting the presence of homologous sequences in a sample.
摘要:
A method and apparatus are provided for preparing a substrate upon which is located microdrop-sized loci at which chemical compounds are synthesized or diagnostic tests are conducted. The loci are formed by applying microdrops from a dispenser from which a microdrop is pulse fed onto the surface of the substrate.
摘要:
A method and apparatus are provided for preparing a substrate upon which is located microdrop-sized loci at which chemical compounds are synthesized or diagnostic tests are conducted. The loci are formed by applying microdrops from a dispenser from which a microdrop is pulse fed onto the surface of the substrate.
摘要:
An apparatus for the automated synthesis of molecular arrays. A jetting device is employed along with a reaction chamber to dispense reagents used in the synthesis onto the substrate. A positioning system moves the substrate from the jet to the reaction chamber. A controller controls the movement of the substrate and the application of the reagents so that the synthesis is carried out according to a pre-determined procedure. The apparatus will synthesize nucleotides in an array of micron-size spots according to a pattern selected by the operator immediately prior to synthesis.
摘要:
Solvent vehicles and methods of their use in the pulse jet delivery of reagents in automated oligonucleotide synthesis by the solid-phase phosphoramidite method are provided. For pulse jet delivery of the activated monomer, acetonitrile in combination with at least one stabilizer co-solvent is employed as the solvent vehicle, where the stabilizer co-solvent is an inert, organic solvent having a boiling point of at least 100.degree. C. For pulse jet delivery of the detritylation reagent, a mono- or disubstituted methane is employed as the solvent vehicle, where substituents have a molecular weight greater than 36 daltons. Use of the solvent vehicles according to the subject invention provides for reduced reagent precipitation in the pulse jet tubes and improved results.
摘要:
The present invention provides combination immunotherapy for Non-Hodgkin's Lymphoma. In one embodiment, the combination immunotherapy first provides for the administration of a monoclonal antibody directed to a non-idotypic portion of a lymphoma cell surface immunoglobulin (e.g. a framework region of a variable region). The combination immunotherapy next provides for the administration of an immunogenic composition comprising at least a portion of the same lymphoma cell surface immunoglobulin, whether an idiotypic portion or non-idiotypic portion.
摘要:
Methods are provide for quantitatively determining the amount of polynucleotides in a sample. In one method, the distinct polynucleotide targets and standard polynucleotide targets are contacted with detectable probes and independently detectable single or double stranded complements to the standard targets under hybridization conditions. The hybridization pattern from the probe is compared to the hybridization pattern from the standard sequences to obtain quantitative information about the genetic profile of the labeled nucleic acid sample. Also provided are kits for the use of the methods.
摘要:
Methods are provide for quantitatively determining the amount of polynucleotides in a sample. In one method, the distinct polynucleotide targets and standard polynucleotide targets are contacted with detectable probes and independently detectable single or double stranded complements to the standard targets under hybridization conditions. The hybridization pattern from the probe is compared to the hybridization pattern from the standard sequences to obtain quantitative information about the genetic profile of the labeled nucleic acid sample. Also provided are kits for the use of the methods.
摘要:
The present invention is directed to novel tools and systems that provide methods to monitor and police platforms for interfacing designed to facilitate the exchange of communications between two or more users. In particular, the present invention provides anonymous and secure methods to capture, monitor, and score users of an interfacing platform, such as a dating platform, based on inappropriate and indecent behavior on the interfacing platform.