Abstract: A method of determining whether one or more forms of a nucleic acid analyte are present in a sample. The method includes dissolving an amplification reagent with a first solvent, where the amplification reagent contains oligonucleotides sufficient to amplify and detect a first region of a first form of the analyte, where the first solvent contains one or more oligonucleotides which, in combination with the oligonucleotides of the amplification reagent, are sufficient to amplify and detect a second region of a second form of the analyte, where the one or more oligonucleotides of the first solvent are insufficient to amplify and detect the first or second form of the analyte, and where the first and second regions each comprise a different nucleotide base sequence.

Abstract: Systems and methods for performing a plurality of nucleic acid amplification assays in an automated analyzer. A first nucleic acid amplification assay of the plurality is performed in accordance with a first set of assay parameters which consist of system-defined parameters. And a second nucleic acid amplification assay of the plurality is performed in accordance with a second set of assay parameters which includes one or more user-defined parameters.

Abstract: A system, method and computer readable medium enabling a user to specify user-defined assay parameters of an assay protocol for processing a sample and causing a computer-controlled analyzer to perform an assay in accordance with the assay protocol.

Abstract: The invention provides compositions and methods for making closed nucleic acid structures in which one or both strands are continuous. The closed nucleic acid structures can be used as sequencing templates among other applications.

Abstract: The invention provides methods of forming a circular template for sequencing a target nucleic acid. The circular template is generated by amplification of a segment of the target nucleic acid with chimeric primers with complementary 5? ends. The circular template has a single nick or gap providing a site for initiation of template-directed extension for sequence analysis. Sequencing of a single template generates reads of alternating segments of the same strand of the target nucleic spaced by primer segments. The different reads of the same strand of the target nucleic acid can be compiled to generate a consensus sequence. Because only one strand of the target nucleic acid is sequenced per reaction, the present method avoids errors introduced by unwittingly combining sequences of both strands of a heteroduplex PCR product.

Abstract: The invention provides methods of forming a circular template for sequencing a target nucleic acid. The circular template is generated by amplification of a segment of the target nucleic acid with chimeric primers with complementary 5? ends. The circular template has a single nick or gap providing a site for initiation of template-directed extension for sequence analysis. Sequencing of a single template generates reads of alternating segments of the same strand of the target nucleic spaced by primer segments. The different reads of the same strand of the target nucleic acid can be compiled to generate a consensus sequence. Because only one strand of the target nucleic acid is sequenced per reaction, the present method avoids errors introduced by unwittingly combining sequences of both strands of a heteroduplex PCR product.

Abstract: The invention provides compositions and methods for making closed nucleic acid structures in which one or both strands are continuous. The closed nucleic acid structures can be used as sequencing templates among other applications.