摘要:
Compositions and methods are disclosed for substantially liquid, gel, suspension, slurry, semisolid and/or colloid storage of biological samples following admixture with the herein disclosed storage composition, permitting substantial recovery of biological activity following storage without refrigeration. In certain embodiments, unfractionated saliva samples may be stored without refrigeration for weeks, months or years in a form that permits recovery of intact DNA following the storage period.
摘要:
Processes and apparatus for performing fast, precise, and reliable gas jet thermocycling on a sample using of pressurized gases delivered to a thermostated reaction chamber at high velocity using computer controlled electronic multiport valves are disclosed. Apparatus for achieving these processes are also disclosed.
摘要:
An improved tube (10) including a closure portion (12), a strap (18) integrally connected to the closure portion (12) and being configured for defining a living hinge, a body portion (20) having a longitudinal axis and an outer wall generally circumscribing the longitudinal ax is, and being integrally and hingedly connected with the closure portion (12) by way of the strap (18), the body portion (20) including a head portion (13) that has an opening (26) through which a sample is dispensed, and a sample portion (28) having a first outer wall dimension (OWD1) and including a closed distal end (30) and a wall structure (32) that includes an outer wall (34) and an inner wall structure (36) that defines a hollow cavity (38) within which the sample resides as a sample volume after is dispensed through the head portion (13), the sample portion (28) being generally elongated along the longitudinal axis and being configured for elastic deformation along a portion of its length, including in a direction that is generally transverse to the longitudinal axis so that at least a portion of the wall structure compressively and resiliently deforms and engages a wall defining an opening in a sample block of a polymerase chain reaction amplification device, and the first outer wail dimension (OWD1) of the sample portion (28) reduces to a smaller second outer wall dimension (OWD2).
摘要:
Compositions and methods are disclosed for substantially dry storage at ambient or elevated temperatures of biological samples such as nucleic acids,, proteins and cells in a form from which the samples can be substantially recovered, using a dissolvable or dissociable dry storage matrix comprising a borate composition and a stabilizer as disclosed, such as any of a number of zwitterionic stabilizers.
摘要:
The present invention provides a method and device for collecting treating and analysis of biological or chemical material by introducing a source material into a specimen container, transferring the source material to a processing device and thermally, chemically and/or mechanically treating the source material to alter at least one constitutive characteristic of the source material and to release or create a target material from the source material.
摘要:
Compositions and methods are disclosed for substantially liquid, gel, suspension, slurry, semisolid and/or colloid storage of biological samples following admixture with the herein disclosed storage composition, permitting substantial recovery of biological activity following storage without refrigeration. In certain embodiments, unfractionated blood or tissue samples may be stored without refrigeration for weeks, months or years in a form that permits recovery of intact DNA, RNA or protein components following the storage period.
摘要:
A device for the collection and handling of biological or chemical specimens and a method for collecting and preparing the biological specimen from a patient selected from a population are disclosed. In particular, the device is particularly useful to collect a biological fluid specimen, such as sputum, to be used in downstream diagnostics tests. The device and method are particularly useful in reducing the handling and exposure of health-care workers to the sample by the use of a bag in which hermetic seals are utilized to separate sample aliquots while providing improved processing, testing and disposal thereof.
摘要:
A thermocycler apparatus and method for rapidly performing the PCR process employs at least two thermoelectric modules which are in substantial spatial opposition with an interior space present between opposing modules. One or multiple sample vessels are placed in between the modules such that the vessels are subjected to temperature cycling by the modules. The sample vessels have a minimal internal dimension that is substantially perpendicular to the modules that facilitates rapid temperature cycling. In embodiments of the invention the sample vessels may be deformable between: a) a shape having a wide mouth to facilitate filling and removing of sample fluids from the vessel, and b) a shape which is thinner for conforming to the sample cavity or interior space between the thermoelectric modules of the thermocycler for more rapid heat transfer.
摘要:
Compositions and methods are disclosed for substantially liquid, gel, suspension, slurry, semisolid and/or colloid storage of biological samples following admixture with the herein disclosed storage composition, permitting substantial recovery of biological activity following storage without refrigeration. In certain embodiments, unfractionated saliva samples may be stored without refrigeration for weeks, months or years in a form that permits recovery of intact DNA following the storage period.
摘要:
The present invention provides a method and device for treating and analyzing a biological specimen. The biological specimen is introduced into a processing device and treated thermally, mechanically, chemically or any combination thereof within the processing device to alter at least one constitutive characteristic of the biological specimen and to release or create one or more biological indicators from the biological specimen. The biological specimen is further contacted with a treated polymeric material so that at least a portion of the polymeric material binds to the one or more biological indicators.