摘要:
Systems, methods and computer readable media for extracting data from features on a chemical array, using a feature extraction module including feature extraction algorithms configured to calculate characteristics of array features. A reference table is provided that associates probe names of probes contained on the array with at least one additional identifier. The reference table is accessible by the feature extraction module to convert any one of the at least one additional identifiers to the probe names, and the probe names to at least one of the at least one additional identifiers.
摘要:
Methods are disclosed for predicting the potential of an oligonucleotide to hybridize to a target nucleotide sequence. A predetermined number of unique oligonucleotides is identified. The unique oligonucleotides are chosen to sample the entire length of a nucleotide sequence that is hybridizable with the target nucleotide sequence. At least one parameter that is independently predictive of the ability of each of the oligonucleotides of the set to hybridize to the target nucleotide sequence is determined and evaluated for each of the above oligonucleotides. A subset of oligonucleotides within the predetermined number of unique oligonucleotides is identified based on the evaluation of the parameter. Oligonucleotides in the subset are identified that are clustered along a region of the nucleotide sequence that is hybridizable to the target nucleotide sequence. The method may be carried out with the aid of a computer.
摘要:
An apparatus for providing multiple collimated light beams from optical fibers and the method for producing such beams. The apparatus includes first and second optical fibers that carry light of first and second wavelengths, respectively, a fixture that maintains the fibers in a fixed relationship to one another, and a collimating lens. Light from each of the first and second optical fibers diverges from a face of the fixture. The collimating lens produces first and second collimated light beams that are displaced relative to one another from the light leaving the face. The face of the fixture is positioned to correct for chromatic aberration in the lens.
摘要:
Systems and methods for using the same to obtain a chemical array layout are provided. Also provided are computer program products for executing the subject methods.
摘要:
A method and apparatus for fabricating an array of biopolymers on a substrate using a biopolymer or biomonomer fluid, and using a dispensing head. The head has a reservoir chamber and at least one jet which can dispense droplets onto a substrate. The jet includes a capillary delivery chamber communicating with the reservoir chamber, which delivery chamber has an orifice. The jet further includes an ejector which, when activated, causes a droplet to be ejected from the orifice. The method includes loading the head by positioning the head with the orifice adjacent and facing a biomonomer or biopolymer fluid, and providing a load pressure to the reservoir chamber. The load pressure is sufficiently negative such that the fluid is drawn into the reservoir chamber through the orifice and delivery chamber, while simultaneously being insufficient to result in ambient atmosphere entering the delivery chamber through the orifice once the head has been loaded and no further fluid is facing and adjacent the orifice. The head is positioned with the orifice facing the substrate and multiple droplets are dispensed from the head orifice so as to form an array of droplets on the substrate.
摘要:
An ultrasound apparatus for imaging tissues from interior of a cavity in the body of a patient is disclosed. The apparatus includes a probe for entering the body to the cavity. The probe has a distal end for entering the body and a proximal end to extend outside the body. At the distal end of the probe is a transducer associated with a rotatable mechanism for transmitting sequential ultrasonic pulses as the rotatable mechanism rotates, forming an angular pattern of transmitted pulses. Ultrasonic energy reflected and scattered from the patient's body tissues is received by an transducer so that each pulse generates a received signal (RF-line). The apparatus has a mechanism for identifying the angular separation between the RF-lines by analyzing the RF-lines caused by reflection and scattering by the body tissues alone. In this way, any distortion caused by the difference between the transmitted angular pattern and the intended angular pattern, if present, can be determined and corrected.
摘要:
Systems and methods for using the same to select probes specific for a target nucleic acid are provided. Also provided are computer program products for executing the subject methods.
摘要:
Probe selection methods, computer program products, systems and arrays are provided. The probes can be used, for example, in genome scanning applications such as array CGH and/or location analysis.
摘要:
Systems and methods for using the same to obtain one or more probe sequences, e.g., for use on an array, are provided. Also provided are computer program products for executing the subject methods.
摘要:
Apparatus and methods are disclosed for printing a plurality of biopolymer features on the surfaces of substrates. An apparatus comprises a substrate mount for receiving a substrate, a dispensing device for dispensing reagents for synthesizing a biopolymer on a surface of the substrate, an optical system for positioning the substrate mount along a y-axis and an optical system for positioning the dispensing device along an x-axis. The apparatus may comprise a touch system for positioning the substrate and the dispensing device along a z-axis. One of the substrate mount or the dispensing device is adapted for translation along the y-axis and for rotation about a central axis that is parallel to a z-axis. The other of the above is adapted to move along the x-axis transversely to the direction of, and independently of, movement of the one adapted for translation along the y-axis. The optical systems cooperate to position the substrate mount and the dispensing device relative to one another. Also disclosed in conjunction with the apparatus and methods are washing stations and loading stations.