摘要:
An analytical device such as a flow cytometer is provided in which a fluid sample flowing through a channel is focused into multiple, parallel particle streams by an acoustic wave field extending across the channel. Each stream is then presented to an individual detector to allow for simultaneous interrogation of the multiple streams and thus, high-throughput analysis of the fluid sample.
摘要:
Methods for proteomic analysis are provided. For example, in one aspect a method for identifying and sequencing a peptide may include fractionating a biological sample containing a peptide of interest to at least partially isolate the peptide, obtaining mass spectra of the peptide, and accelerating the peptide into a collision chamber at a plurality of discrete collision energies for a discrete period of time to form a plurality of peptide fragments for each of the plurality of discrete collision energies. The method may further include obtaining a plurality of fragmentation mass spectra from the plurality of peptide fragments for each of the plurality of discrete collision energies, summing the plurality of fragmentation mass spectra from each of the plurality of discrete collision energies to form a plurality of discrete collision energy mass spectra, one discrete collision energy mass spectra from each discrete collision energy, summing the plurality of discrete collision energy mass spectra to form a final mass spectrum for the peptide fragments, and identifying a sequence of amino acids corresponding to the peptide from the final mass spectrum.
摘要:
A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals.
摘要:
A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals.
摘要:
A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals.
摘要:
An automated blood or bodily fluid sampling machine for collecting, measuring and monitoring real time samples from test animals during dosing of the animals, automatically provides real-time adjustment of dosing during testing. Such automated blood or bodily fluid sampling is performed in tandem with implanted physiological monitoring devices to monitor biological and physiological parameters in restrained or freely-moving test animals. The real-time feedback provides for dosing adjustment within testing protocols.
摘要:
A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals.
摘要:
This invention relates to a novel recovery process for obtaining the small molecular weight, digitalis-like factor, and further relates to purification of the digitalis-like factor. This invention also relates to the identification and characterization of the factor and to therapeutic uses for the purified factor.