Amplified fragment length polymorphism (AFLP) and enterobacterial repetitive intergenic consensus polymerase chain reaction (ERIC-PCR) genomic fingerprinting assays were compared for their ability to differentiate Escherichia coli isolates obtained from various host sources, and with respect to their pathogenicity. One hundred and ten verotoxigenic, enterotoxigenic and non-pathogenic E. coli is...

Abstract. As an excellent local sheep breed in China, Hu have the characteristics of producing more lambs and good motherhood. The purpose this study was to identify polymorphism mitogen-activated protein kinase 5 (MAP3K5) gene determine whether it associated with body size traits (body height, length, chest circumference, cannon circumference) sheep. MAP3K5 identified by using PCR amplificatio...

Immuno polymerase chain reaction (IPCR) is an analytical technology based on the excellent affinity and specificity of antibodies combined with the powerful signal amplification of polymerase chain reaction (PCR), providing superior sensitivity to classical immunoassays. Here we present a novel type of IPCR termed phage anti-immunocomplex assay real-time PCR (PHAIA-PCR) for the detection of sma...

We develop a strategy for haplotype analysis of PCR products that contained two adjacent heterozygous loci using sequencing with specific primers, allele-specific primers, and ddNTP-blocked primers. To validate its feasibility, two sets of PCR products, including two adjacent heterozygous SNPs, UGT1A1⁎6 (rs4148323) and UGT1A1⁎28 (rs8175347), and two adjacent heterozygous SNPs, K1637K (rs1117601...

Droplet digital PCR (ddPCR) is an emerging nucleic acid detection method that provides absolute quantitations of target sequences without relying on the use of standard curves. The ability of ddPCR to detect and quantitate total HIV-1 DNA and 2-LTR circles from a panel of patients on and off antiviral therapy was evaluated compared to established real-time (RT)-PCR methods. To calculate the dyn...

Figure 1: The procedures of the proposed method. In the technology of DNA chips and cDNA microarrays, there is a great deal of studies on composing oligo DNA on the DNA chip and the cDNA microarray by the present situation, but there are a few studies on designing oligo DNA sequences, which are fixed on the DNA chip and the cDNA microarray [4]. Probe design is the essential procedure for high-t...

Real-time fluorescence-based quantitative PCR has become established as the benchmark technology for the quantification of nucleic acids, offering an immense choice of protocols, chemistries and instruments. However, whilst there are comparatively few technical problems associated with DNA-targeted quantitative PCR, this is not the case for real-time reverse transcription PCR assays, and there ...

The article describes a new technology for real-time polymerase chain reaction (PCR) detection of nucleic acids. Similar to Taqman, this new method, named Snake, utilizes the 5'-nuclease activity of Thermus aquaticus (Taq) DNA polymerase that cleaves dual-labeled Förster resonance energy transfer (FRET) probes and generates a fluorescent signal during PCR. However, the mechanism of the probe cl...

The polymerase chain reaction (PCR), first described in 1985, is a highly sensitive and specific technique used for the detection of nucleic acids [55]. The inventor of this technology earned a Nobel prize for his achievement [43,44], which has revolutionised research and diagnostic possibilities. Qualitative PCR is a well established and straightforward technology, but quantification of specif...

BACKGROUND Aberrant promoter methylation is a major mechanism for silencing tumor suppressor genes in cancer. Detection of hypermethylation is used as a molecular marker for early cancer diagnosis, as a prognostic index, or to define therapeutic targets for reversion of aberrant methylation. We report on a novel signal generation technology for real-time PCR to detect gene promoter methylation....