Abstract:
An instrument (1000) for processing and/or measuring a biological process contains an excitation source (110), a sample holder (204), an optical sensor (118), an excitation optical system (120), and an emission optical system (125). The sample holder (204) is configured to receive a plurality of biological samples. The optical sensor (118) is configured to receive an emission from the biological samples. The excitation optical system (120) is disposed along an excitation optical path (126) and is configured to direct the electromagnetic radiation from the excitation source (110) to the biological samples. The emission optical system (125) is disposed along an emission optical path (128) and is configured to direct electromagnetic emissions from the biological samples to the optical sensor (118). The instrument further contains a plurality of filter assemblies (130, 132) configured to be interchangeably located along at least one of the optical paths. The plurality of filter components (131) includes a first filter component (138) characterized by a first optical power and a first filter (140) having a first filter function, the first filter function characterized by at least one of a first low-pass wavelength or a first high-pass wavelength. The second filter assembly (142) is characterized by a second optical power and a second filter (145) having a second filter function, the second filter function comprising at least one of a second low-pass wavelength that is different than the first low-pass wavelength or a second high-pass wavelength that is different than the first high-pass wavelength. The second optical power differs from the first optical power by an amount sufficient to at least partially compensate for an aberration introduced by the second filter (145) relative to the first filter (140).
Abstract:
Systems, methods, and kits are disclosed for collection, labeling and analyzing biological samples containing nucleic acid in conjunction with collecting at least one ridge and valley signature of an individual. Such devices and methods are used in forensic, human identification, access control and screening technologies to rapidly process an individual's identity or determine the identity of an individual.
Abstract:
A method of preparing a sequencing device includes determining a sensitivity of a pH of a solution to a first reagent, determining an amount of the first reagent to add to the solution to approach a target pH, adding the amount of the first reagent to the solution, and diluting a nucleotide solution with the solution.
Abstract:
In some embodiments, the present teachings provide compositions, systems, methods and kits for reducing the complexity of nucleotide sequences in a nucleic acid sample comprising the steps: hybridizing a plurality of polynucleotide constructs to at least one blocker oligonucleotide and to at least one capture oligonucleotide, wherein the plurality of polynucleotide constructs include a plurality of polynucleotides each joined to at least one nucleic acid adaptor, wherein the at least one nucleic acid adaptor can hybridize to the at least one blocker oligonucleotide, and wherein the at least one capture oligonucleotide can hybridize to at least a portion of target polynucleotides that are a sub-population of the plurality of polynucleotides, so as to produce a capture duplex.
Abstract:
The disclosure relates to methods of making polymer particles, said methods including the steps of: making an aqueous gel reaction mixture; forming an emulsion having dispersed aqueous phase micelles of gel reaction mixture in a continuous phase; adding an initiator oil comprising at least one polymerization initiator to the continuous phase; and performing a polymerization reaction in the micelles. Further, the initiator oil is present in a volume % relative to a volume of the aqueous gel reaction mixture of between about 1 vol% to about 20 vol%. The disclosure also relates to methods of making nucleic acid polymer particles having the same method steps and wherein the aqueous gel reaction mixture includes a nucleic acid fragment, such as a primer.
Abstract:
Fluorogenic semiconductor nanocrystals and compositions thereof are provided herein, including kits, assay systems and methods for their preparation and use.
Abstract:
Disclosed herein are compositions, methods and kits for analyzing three-dimensional chromatin and/or chromosome conformation. Method are also disclosed for using the methods disclosed herein for diagnosing diseases such as cancer.
Abstract:
A gel electrophoresis system (12) comprises a gel electrophoresis device (20) a gel illumination device (13), an image capture device (14) and an image analysing device (15). It is operably associated with a computer system (10) that is configured to display on a display (26).
Abstract:
Low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations for modifying biomolecules is provided. Compositions, methods, and kits relating to low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations are also provided.
Abstract:
Methods for increasing the stability of, or protecting, labile components such as ethanolamine, growth factors, vitamins, etc., in compositions such as a cell culture medium. Stability of the labile compound is increased either, by derivatization of the labile compound with chemicals, or by sequestering the labile compound. Sequestering can be done either by encapsulation within a microcapsule, or by the use of sequestering agents. Encapsulation includes the encapsulation of dendrimers complexes of susceptible compounds within the microcapsule, thereby providing the controlled release of the susceptible compound that was protected.These methods may improve and extend storage conditions of compositions comprising the labile compounds, improve shipping and handling of compositions comprising the labile compounds, such as dry media formulations, at room temperature rather than at lower temperatures thereby decreasing shipping costs. Stabilization of labile compounds in compositions such as dry format media can be viewed as a contribution to green technology.