摘要:
Methods and systems for identifying and selecting nucleic acid probes for detecting a target with a nucleic acid probe array or comparative genome hybridization microarray, comprising selecting a plurality of potential target sequences, generating a plurality of candidate probes from the target sequences, filtering the plurality of candidate probes by analyzing candidate probes for selected probe properties in silico. Microarrays comprising probes selected by the methods of the invention are particularly useful for comparative genome hybridization and location analysis.
摘要:
The nanoscale FET probe comprises a cantilever element and, at one end of the cantilever element, a nanowire that extends from the cantilever element. The nanowire is electrically connected to the cantilever element at at least one of the ends of the nanowire. The nanowire is capable of being coated with molecules of a capture agent along at least part of its length.
摘要:
Methods of reading chemical arrays are provided. Aspects of the methods include reading an array at a first and second detector gain setting to produce linked data sets of an array, where each reading may be made using a different detector gain setting. Aspects of the methods further include extracting features from the linked data sets, where in certain embodiments a merged data set feature extraction protocol is employed. Aspects of the invention further include programming for operating devices, e.g., chemical array readers, as well as readers comprising such programming.
摘要:
Systems and methods of obtaining measurements of light transmitted through an assay test strip are described. In one aspect, a test strip is held. The top side of the test strip is illuminated with light. The illuminating light that is transmitted through the test strip and out from the bottom side of the test strip is detected. In another aspect, a diagnostic test system includes a detection system and a retainer. The detection system includes an optical detector that produces a measurement signal in response to light. The retainer holds a test strip so that the top side of the test strip is exposed for illumination and the bottom side of the test strip faces the optical detector.
摘要:
Methods, systems and computer readable media for characterizing quality of CGH arrays, including generating at least one metric for a CGH array that characterizes a property of the CGH array; repeating generation of the at least one metric for at least one additional CGH array; and comparing each metric across all CGH array metric values generated to identify a quality of any one of the CGH arrays characterized, relative to the CGH arrays characterized for that metric. Methods, systems and computer readable media for determining the quality of a CGH array, including calculating a spread of the derivative of log ratio value differences between consecutive probes representing consecutive positions along a chromosome, wherein ratio values are calculated from probe signals from a CGH array, as read by a reader on first and second channels thereof, or from probes signals from two CGH arrays, as read by a single channel reader. Methods, systems and computer readable media for qualifying a CGH array, including quantifying an interarray reproducibility metric characterizing selected sets of probe replicates. Methods, systems and computer readable media for qualifying a CGH array, including generating a Receiver Operating Characteristic (ROC) curve and analyzing false positive and true positive signals from a normal male sample and a normal female sample, as read by a reader on first and second channels thereof, or from one of a normal male sample and a normal female sample on the CGH array and the other of the normal male sample and normal female sample on a second CGH array, as read by a single-channel reader. Methods, systems and computer readable media for determining the quality of a CGH array, including segmenting, by copy number, log ratio signals from probes on the CGH array representing a genome; plotting a probability distribution of the segmented log ratio values; and quantifying separation between copy number peaks resulting from the plotting of the probability distribution.
摘要:
An assay test strip includes a flow path, a sample receiving zone, a label, a detection zone that includes a region of interest, and at least one position marker. The at least one position marker is aligned with respect to the region of interest such that location of the at least one position marker indicates a position of the region of interest. A diagnostic test system includes a reader that obtains light intensity measurement from exposed regions of the test strip, and a data analyzer that performs at least one of (a) identifying ones of the light intensity measurements obtained from the test region based on at least one measurement obtained from the at least one reference feature, and (b) generating a control signal modifying at least one operational parameter of the reader based on at least one measurement obtained from the at least one reference feature.
摘要:
An exemplary embodiment of the invention includes a bet recognition system for use with a card game. A table is provided for playing a card game including a bet location for each player. An image capture device is positioned in proximity to the bet location and configured to capture an image of a player's bet. An image processor is coupled to the image capture device and configured to process the image by locating at least one chip and creating a signal representing the chip, comparing the signal to a plurality of stored signatures, and when a match occurs, generating a signal representing the bet. In one aspect, the image processor is configured to generate an error signal when unable to match a candidate signature with at least one of the stored signatures.
摘要:
Methods and systems for identifying and selecting nucleic acid probes for detecting a target with a nucleic acid probe array or comparative genome hybridization microarray, comprising selecting a plurality of potential target sequences, generating a plurality of candidate probes from the target sequences, filtering the plurality of candidate probes by analyzing candidate probes for selected probe properties in silico. Microarrays comprising probes selected by the methods of the invention are particularly useful for comparative genome hybridization and location analysis.
摘要:
Methods and compositions for detecting copy number variations between nucleic acid samples are provided. Also provided are kits for practicing methods in accordance with the invention.
摘要:
In an embodiment, a method is included for generating a negative control probe sequence for an array including selecting biological probe sequences from the array randomly, generating a plurality of candidate probe sequences by randomly permuting the selected biological probe sequence, and screening the candidate probe sequences for sequence similarity to biologically occurring sequences. An embodiment also includes a computer-readable medium having computer-executable instructions for performing a method for generating a negative control probe sequences. Embodiments can also include an apparatus for generating a negative control sequence for an array, as well as negative control probes, sets of negative control probes and arrays comprising at least one negative control probe.