摘要:
Methods and software products for analysis of alternative splicing are disclosed. In general the methods involve normalizing probe set or exon intensity to an expression level measurement of the gene. The methods may be used to identify tissue-specific alternative splicing events.
摘要:
Methods and computer software products are provided for transcriptional annotation. In one embodiment of the invention, a region of the genome where the intensity of hybridization of all the probes are above a threshold value (usually the level of non-specific hybridization) is identified. The region may be identified by aligning the probes against the genome; walking through the genome to find regions where all consecutive probes have intensities above the threshold value.
摘要:
Systems and methods are described for processing an emission signal, such as a fluorescent signal, to compensate for noise in an excitation beam, such as a laser beam. As one example, a scanning system is described that includes an excitation signal generator that provides an excitation signal having one or more representative excitation values representative of an excitation beam; an excitation reference provider that provides at least one excitation reference value; a normalization factor generator that compares the excitation reference value to at least one representative excitation value, thereby generating a normalization factor; and a comparison processor that adjusts at least one emission value corresponding to the at least one representative excitation value based, at least in part, on the normalization factor.
摘要:
Methods for identifying transcripts and genes whose splicing is regulated by a selected splicing factor are disclosed. Unprocessed or partially processed transcripts are bound to an array of probes and contacted with one or more splicing factors. The identities of transcripts bound to splicing factors are determined.
摘要:
In one aspect of the invention, systems methods, and devices are provided for handling liquid. In some embodiments, such systems, methods, and devices are used to process reagent biochemical reactions.
摘要:
Novel methods and kits for analyzing a collection of target sequences in a nucleic acid sample are provided. A reduced complexity sample is generated and then analyzed. A sample is amplified under conditions that enrich for a subset of fragments that includes a collection of target sequences. The invention further provides for analysis of the above sample. Analysis may be by hybridization to an array, which may be specifically designed to interrogate the collection of target sequences for particular characteristics, such as, for example, the presence or absence of one or more polymorphisms.
摘要:
Nucleic acid labeling compounds containing heterocyclic derivatives are disclosed. The heterocyclic derivative containing compounds are synthesized by condensing a heterocyclic derivative with a cyclic group (e.g. a ribofuranose derivative). The labeling compounds are suitable for enzymatic attachment to a nucleic acid, either terminally or internally, to provide a mechanism of nucleic acid detection.
摘要:
A device for optical examination of biological materials using radiation of a selected wavelength includes a substrate having a first surface and a second surface opposite to the first surface. The first surface includes a dense array of micro-optical elements arranged to provide increased intensity radiation or evanescent radiation. The first surface is in close proximity to the biological material being examined.
摘要:
In one embodiment, a method for correcting feature overlap in biological probe array data is described that comprises (a) receiving a first set of data comprising an intensity value for each of a plurality of features associated with a probe array; (b) calculating a crosstalk parameter for the first set of data using the intensity values of one or more test features and a plurality of features that neighbor each test feature; and (c) applying the crosstalk parameter to each intensity value in the first set of data to produce a second set of data.
摘要:
Systems and methods for aligning scanned images are provided. A pattern is included in the scanned image so that when the image is convolved with a filter, a recognizable pattern is generated in the convolved image. The scanned image may then be aligned according to the position of the recognizable pattern in the convolved image. The filter may also act to remove the portions of the scanned image that do not correspond to the pattern in the scanned image.