Abstract: Systems and methods are described for quantifying a target nucleic acid. A sample comprising a target nucleic acid is segregated into a first plurality of the reaction volumes containing at least one target nucleic acid molecule and a second plurality of the reaction volumes containing no target nucleic acid molecules. The reaction volumes are subjected to an amplification assay, wherein the amplification assay is configured to amplify the target nucleic acid. An indicator of amplification is detected or measured in at least some of the plurality of reaction volumes. The target nucleic acid is quantified based on the detection or measurement. After discontinuing the amplification assay, the plurality of reaction volumes may be heated and changes in the indicators of amplification of two or more of the at least some of the reaction volumes may be detected or measured.

Abstract: Systems and methods are described for quantifying a target nucleic acid. A sample comprising a target nucleic acid is segregated into a first plurality of the reaction volumes containing at least one target nucleic acid molecule and a second plurality of the reaction volumes containing no target nucleic acid molecules. The reaction volumes are subjected to an amplification assay, wherein the amplification assay is configured to amplify the target nucleic acid. An indicator of amplification is detected or measured in at least some of the plurality of reaction volumes. The target nucleic acid is quantified based on the detection or measurement. After discontinuing the amplification assay, the plurality of reaction volumes may be heated and changes in the indicators of amplification of two or more of the at least some of the reaction volumes may be detected or measured.

Abstract: Systems and methods are described for quantifying a target nucleic acid. A sample comprising a target nucleic acid is segregated into a first plurality of the reaction volumes containing at least one target nucleic acid molecule and a second plurality of the reaction volumes containing no target nucleic acid molecules. The reaction volumes are subjected to an amplification assay, wherein the amplification assay is configured to amplify the target nucleic acid. An indicator of amplification is detected or measured in at least some of the plurality of reaction volumes. The target nucleic acid is quantified based on the detection or measurement. After discontinuing the amplification assay, the plurality of reaction volumes may be heated and changes in the indicators of amplification of two or more of the at least some of the reaction volumes may be detected or measured.

Abstract: A system for detecting one or more target molecules includes a reaction device and a temperature controller. The reaction device comprises a plurality of reaction sites and plurality of field effect transistors corresponding to the plurality of reaction sites. At least two of the reaction sites may receive a reaction solution including two target molecules. The temperature controller is configured to control a temperature of at least one of the reaction sites or the reaction solution received by the at least one reaction site. At least some of the reaction sites may receive a reagent supporting an amplification reaction. When the reaction is subjected to an amplification assay, an amplified product is produced in the at least some of the reaction sites. The plurality of field effect transistors are configured to detect at least one of the amplified products.

Abstract: This disclosure relates to methods and kits for karyotyping in which chromosomes are interrogated by amplifying loci that are not within copy number variable regions thereof.

Abstract: This specification generally relates to methods of detecting the linkage between two or more targets in a sample using digital multiplex PCR. A method of identifying physical linkage between two or more nucleic acid targets in a sample is provided. The method includes diluting the sample via limiting dilution and aliquoting the diluted sample into wells. The method further includes performing multiplex PCR in each chamber, where a first dye is used for the first target and a second dye is used for the second target. The method includes identifying the presence of the first and second dyes in the wells, wherein a non-random distribution of the dyes identifies the targets as linked.

Abstract: This disclosure relates to methods and kits for karyotyping in which chromosomes are interrogated by amplifying loci that are not within copy number variable regions thereof.