Abstract: A magnetic mixing device designed to mix fluid in a reaction chamber and remove air bubbles if present. The device comprises a holder with embedded magnets, which causes movement of a stir bar within the reaction chamber. The holder may be moved by an electric linear actuator configured to generate linear motion or an electric motor configured to generate a circular motion. When orientated so the stir bar moves vertically within the reaction chamber, the stir bar disrupts any air bubbles trapped within or below the fluid.

Abstract: A self-metering reaction device has a sample reservoir, configured to accept a varying amount of fluid; a metering reservoir, configured to be a subportion of the sample reservoir and to hold a reaction amount of the fluid; a reaction chamber fluidly connected to the metering reservoir; and a plunger comprising a tip configured to make a seal with the metering reservoir so that the reaction amount of the fluid is sealed within the metering reservoir when the plunger is in contact with the metering reservoir. The plunger can be configured to plunge the sealed reaction amount of the fluid from the metering reservoir into the reaction chamber.

Abstract: A collection device is disclosed having a tubular housing detachably receiving a valved bulb reservoir at a first end thereof, the housing having a second end for dispensing fluids. The valved bulb reservoir has a sample capillary tube attached at one end thereof. The bore of the capillary is fluidically coupled to the valved bulb reservoir. The capillary is removed from the tubular housing to collect a sample in its bore, and is then replaced into the tubular housing. The contents of the valved tubular reservoir, which can be a buffer solution, a reagent, or other analytic fluid, or a gas, are then passed through the capillary bore to expel the sample and mix therewith in the housing. The sample product can then be dispensed from the tubular housing.

Abstract: A collection device is disclosed having a tubular housing detachably receiving a valved bulb reservoir at a first end thereof, the housing having a second end for dispensing fluids. The valved bulb reservoir has a sample capillary tube attached at one end thereof. The bore of the capillary is fluidically coupled to the valved bulb reservoir. The capillary is removed from the tubular housing to collect a sample in its bore, and is then replaced into the tubular housing. The contents of the valved tubular reservoir, which can be a buffer solution, a reagent, or other analytic fluid, or a gas, are then passed through the capillary bore to expel the sample and mix therewith in the housing. The sample product can then be dispensed from the tubular housing.

Abstract: Embodiments of present disclosure are directed to methods for amplifying nucleic acid, comprising two steps: a first step of preparing a reaction mixture comprising the target nucleic acid and a second step of processing the reaction mixture in a thermocycler. During a first phase of the processing step, the thermocycler may be configured to heat the reaction mixture to a first temperature and cool the reaction mixture to a second temperature repeatedly for a first plurality of cycles. During the first phase, fluorescence probes do not anneal to template strands and do not emit fluorescence signals. During a second phase of the processing step, the thermocycler may heat the reaction mixture to a third temperature and cool the reaction mixture to a fourth temperature repeatedly for a second plurality of cycles.

Abstract: A method and system for solid phase extraction of a compound of interest from a sample matrix using a syringe having a barrel and a plunger, a sorbent for use with the syringe, and a desalting purification column having an end configured to receive liquid from the syringe body.

Abstract: Systems and methods for detecting the presence of a target nucleic acid in a sample via a recombinase polymerase amplification (RPA) reaction followed by a FEN1 cleavage detection reaction are disclosed. One aspect of the present disclosure relates to systems involving a sample collection device for collecting a sample and performing an RPA reaction on the sample, followed by the detection of the amplified product via a two-step FEN1 cleavage detection reaction which generates a fluorescent signal indicative of the presence of amplified product.

Abstract: Embodiments of present disclosure are directed to methods for amplifying nucleic acid, comprising two steps: a first step of preparing a reaction mixture comprising the target nucleic acid and a second step of processing the reaction mixture in a thermocycler. During a first phase of the processing step, the thermocycler may be configured to heat the reaction mixture to a first temperature and cool the reaction mixture to a second temperature repeatedly for a first plurality of cycles. During the first phase, fluorescence probes do not anneal to template strands and do not emit fluorescence signals. During a second phase of the processing step, the thermocycler may heat the reaction mixture to a third temperature and cool the reaction mixture to a fourth temperature repeatedly for a second plurality of cycles.

Abstract: A magnetic mixing device designed to mix fluid in a reaction chamber and remove air bubbles if present. The device comprises a holder with embedded magnets, which causes movement of a stir bar within the reaction chamber. The holder may be moved by an electric linear actuator configured to generate linear motion or an electric motor configured to generate a circular motion. When orientated so the stir bar moves vertically within the reaction chamber, the stir bar disrupts any air bubbles trapped within or below the fluid.

Abstract: Embodiments of present disclosure are directed to methods for amplifying nucleic acid, comprising two steps: a first step of preparing a reaction mixture comprising the target nucleic acid and a second step of processing the reaction mixture in a thermocycler. During a first phase of the processing step, the thermocycler may be configured to heat the reaction mixture to a first temperature and cool the reaction mixture to a second temperature repeatedly for a first plurality of cycles. During the first phase, fluorescence probes do not anneal to template strands and do not emit fluorescence signals. During a second phase of the processing step, the thermocycler may heat the reaction mixture to a third temperature and cool the reaction mixture to a fourth temperature repeatedly for a second plurality of cycles.

Abstract: A self-metering reaction device has a sample reservoir, configured to accept a varying amount of fluid; a metering reservoir, configured to be a subportion of the sample reservoir and to hold a reaction amount of the fluid; a reaction chamber fluidly connected to the metering reservoir; and a plunger comprising a tip configured to make a seal with the metering reservoir so that the reaction amount of the fluid is sealed within the metering reservoir when the plunger is in contact with the metering reservoir. The plunger can be configured to plunge the sealed reaction amount of the fluid from the metering reservoir into the reaction chamber.

Abstract: A method and system for solid phase extraction of a compound of interest from a sample matrix using a syringe having a barrel and a plunger, a sorbent for use with the syringe, and a desalting purification column having an end configured to receive liquid from the syringe body.

Abstract: A collection device is disclosed having a tubular housing detachably receiving a valved bulb reservoir at a first end thereof, the housing having a second end for dispensing fluids. The valved bulb reservoir has a sample capillary tube attached at one end thereof. The bore of the capillary is fluidically coupled to the valved bulb reservoir. The capillary is removed from the tubular housing to collect a sample in its bore, and is then replaced into the tubular housing. The contents of the valved tubular reservoir, which can be a buffer solution, a reagent, or other analytic fluid, or a gas, are then passed through the capillary bore to expel the sample and mix therewith in the housing. The sample product can then be dispensed from the tubular housing.

Abstract: The invention relates to a Bacillus spore specific antigen. Compositions and methods relating to the antigen are provided along with antibodies against the antigen. The antigen is specific for Bacillus spores relative to the vegetative form of the cells. The antigen is detectable on ungerminated spores. The antibodies may be used to detect the presence of Bacillus spores by use of methods provided herein. The invention also relates to articles of manufacture as well as kits comprising the antibodies which may be used in the detection methods of the invention.

Abstract: The invention relates to spore specific antibodies. Compositions and methods relating to the antibodies are provided along with the hybridomas that produce the antibodies. The antibodies are specific for the spores of Bacillus anthracis relative to the vegetative form of the cells. The antibodies are also specific for the spores relative to other Bacillus spores and cells. The antibodies may be used to detect the presence of Bacillus anthracis spores by use of methods provided herein. The invention also relates to articles of manufacture as well as kits comprising these antibodies which may be used in the detection methods of the invention.

Abstract: The present invention is directed to diagnostic tools and therapies using antibodies to Bacillus anthracis. Specifically, the present invention is directed to a B. anthracis-specific monoclonal antibody that binds to the EA1 antigen (corresponding to the eag gene) of the S-layer (surface layer) of spores. This monoclonal antibody may be used in a variety of applications, including to specifically detect and diagnose B. anthracis. Preferably, antibodies are monoclonal and bind to a surface protein, such as EA1 protein, on the spores of B. anthracis, and not to spores of either B. cereus or B. thuringiensis. Antibodies can be incorporated into detection kits using, for example, colloidal particle based lateral flow detection system. Such detection kits can distinguish anthrax spores from non-pathogenic varieties of spores. In addition, the invention is directed to B.

Abstract: The invention relates to a Bacillus spore specific antigen. Compositions and methods relating to the antigen are provided along with antibodies against the antigen. The antigen is specific for Bacillus spores relative to the vegetative form of the cells. The antigen is detectable on ungerminated spores. The antibodies may be used to detect the presence of Bacillus spores by use of methods provided herein. The invention also relates to articles of manufacture as well as kits comprising the antibodies which may be used in the detection methods of the invention.

Abstract: The invention relates to spore specific antibodies. Compositions and methods relating to the antibodies are provided along with the hybridomas that produce the antibodies. The antibodies are specific for the spores of B. anthracis relative to the vegetative form of the cells. The antibodies are also specific for the spores relative to other Bacillus spores and cells. The antibodies may be used to detect the presence of B. anthracis spores by use of methods provided herein. The invention also relates to articles of manufacture as well as kits comprising these antibodies which may be used in the detection methods of the invention.

Abstract: Air or gas is drawn into a particle impact collector where the air or gas is forced through non-linear passages inside the collector in such a manner that particles or droplets entrained in the air or gas, or contaminant vapors in the air or gas, are retained in and concentrated by the passages. Once retained and concentrated, the contaminants are suspended or dissolved in a liquid collection medium purging the passages, the collection medium containing assay reagents for a multiplexed binding assay. The agitation produced by the flow of gas and liquid through the non-linear passages increases the reaction rate of the assay.

Abstract: This invention provides compositions and methods for the detection of porcine reproductive and respiratory syndrome viruses (PRRSV). The invention provides oligonucleotides containing sequences complementary to those in ORF 7 and the 3?-UTR (untranslated region) of PRRSV which oligonucleotides may be used to detect the presence of PRRSV sequences, and thus the presence of PRRSV infection, by use of methods provided by the invention. The invention also provides articles of manufacture as well as kits comprising these oligonucleotides which may be used in the detection methods of the invention.