Abstract: Provided herein are improved methods for measuring the infectivity of replication defective viruses and viral vectors. In some embodiments, the replication defective virus is recombinant AAV.

Abstract: A reversibly modified ‘hot start’ RNase H enzyme composition is described for the improved CATACLEAVE™ probe detection of nucleic acid sequences in a test sample. A key feature of the enzyme composition is the ability to regulate the catalytic activity of the RNase H during the course of a reverse transcription-PCR cycle. Thus, RNase H activity can be initially suppressed to minimize degradation of RNA:DNA primer heteroduplexes prior to reverse transcription. After cDNA synthesis is complete, RNase H activity is induced to promote the cleavage and fluorescent detection of CATACLEAVE™ probes that anneal to target DNA sequences within the reverse transcriptase-PCR products. The inducible RNase H enzyme is amenable to high throughput applications requiring one step reverse transcriptase CATACLEAVE™ PCR in a single reaction mix.

Abstract: A kit for detecting HIV-2 strains in a test sample is disclosed. In addition a method is described for the real-time detection of HIV-2 strains in a test sample using the kit. According to method of detection, the results of the detection can be rapidly identified with a reduced number of copies of a sample in real-time.

Abstract: A reversibly modified ‘hot start’ RNase H enzyme composition is described for the improved CATACLEAVE™ probe detection of nucleic acid sequences in a test sample. A key feature of the enzyme composition is the ability to regulate the catalytic activity of the RNase H during the course of a reverse transcription-PCR cycle. Thus, RNase H activity can be initially suppressed to minimize degradation of RNA:DNA primer heteroduplexes prior to reverse transcription. After cDNA synthesis is complete, RNase H activity is induced to promote the cleavage and fluorescent detection of CATACLEAVE™ probes that anneal to target DNA sequences within the reverse transcriptase-PCR products. The inducible RNase H enzyme is amenable to high throughput applications requiring one step reverse transcriptase CATACLEAVE™ PCR in a single reaction mix.

Abstract: A reversibly modified ‘hot start’ RNAse H enzyme composition is described for the improved CATACLEAVE™ probe detection of nucleic acid sequences in a test sample. A key feature of the enzyme composition is the ability to regulate the catalytic activity of the RNAse H during the course of a reverse transcription-PCR cycle. Thus, RNAse H activity can be initially suppressed to minimize degradation of RNA:DNA primer heteroduplexes prior to reverse transcription. After cDNA synthesis is complete, RNAse H activity is induced to promote the cleavage and fluorescent detection of CATACLEAVE™ probes that anneal to target DNA sequences within the reverse transcriptase-PCR products. The inducible RNAse H enzyme is amenable to high throughput applications requiring one step reverse transcriptase CATACLEAVE™ PCR in a single reaction mix.

Abstract: Disclosed is a method in the fields of biochemistry and molecular biology. The method is related to improve cleavage kinetics of labeled oligonucleotide probes and, consequently, increases signal-to-noise ratio in detecting nucleic acids.

Abstract: A method is described for the real-time detection of Salmonella species in foods and on surfaces. Salmonella are enriched in media to increase their cell density prior to analysis. DNA is recovered by lysis in the presence of azide, proteinase K, and detergent. Real-time detection of Salmonella species is performed in a PCR reaction using gene specific primers and a cleavable chimeric fluorescent probe. The method also describes an internal control to confirm the efficiency of nucleic acid amplification and detection. The method is amenable to medium and high throughput analysis.

Abstract: A medium for enriching Listeria spp. without polymerase chain reaction (PCR) inhibition and a method of using the medium.

Abstract: A kit for detecting Chlamydia trachomatis in a test sample is disclosed. In addition a method is described for the real-time detection of Chlamydia trachomatis in a test sample using the kit. According to method of detection, the results of the detection can be rapidly identified with a reduced number of copies of a sample in real-time.

Abstract: A medium for enriching Listeria spp. without polymerase chain reaction (PCR) inhibition and a method of using the medium.

Abstract: Oligonucleotides, a kit, and a method for detecting E. coli O157:H7 strains are provided. According to the kit for detecting E. coli O157:H7 strains and the method of detecting E. coli O157:H7 strains by using the kit, the results of the detection can be rapidly identified with a reduced number of copies of a sample in real-time.

Abstract: Methods are described for the rapid, simultaneous and quantitative PCR detection of pathogenic Salmonella spp. and E. coli O157: H7 nucleic acid sequences in a sample in real-time. The detection method is fast, accurate and suitable for high throughput applications. Convenient, user-friendly and reliable diagnostic kits are also described for the simultaneous detection of Salmonella and E. coli O157: H7 in food samples and on surfaces.

Abstract: A kit for detecting HIV-2 strains in a test sample is disclosed. In addition a method is described for the real-time detection of HIV-2 strains in a test sample using the kit. According to method of detection, the results of the detection can be rapidly identified with a reduced number of copies of a sample in real-time.

Abstract: A kit for detecting HBV in a test sample is disclosed. In addition a method is described for the real-time detection of HBV in a test sample using the kit. According to method of detection, the results of the detection can be rapidly identified with a reduced number of copies of a sample in real-time.

Abstract: A reversibly modified ‘hot start’ RNAse H enzyme composition is described for the improved CATACLEAVE™ probe detection of nucleic acid sequences in a test sample. A key feature of the enzyme composition is the ability to regulate the catalytic activity of the RNAse H during the course of a reverse transcription-PCR cycle. Thus, RNAse H activity can be initially suppressed to minimize degradation of RNA:DNA primer heteroduplexes prior to reverse transcription. After cDNA synthesis is complete, RNAse H activity is induced to promote the cleavage and fluorescent detection of CATACLEAVE™ probes that anneal to target DNA sequences within the reverse transcriptase-PCR products. The inducible RNAse H enzyme is amenable to high throughput applications requiring one step reverse transcriptase CATACLEAVE™ PCR in a single reaction mix.

Abstract: A method is described for the real-time detection of Salmonella species in foods and on surfaces. Salmonella are enriched in media to increase their cell density prior to analysis. DNA is recovered by lysis in the presence of azide, proteinase K, and detergent. Real-time detection of Salmonella species is performed in a PCR reaction using gene specific primers and a cleavable chimeric fluorescent probe. The method also describes an internal control to confirm the efficiency of nucleic acid amplification and detection. The method is amenable to medium and high throughput analysis.