Vertebrate gap junctions are aggregates of transmembrane channels which are composed of connexin (Cx) proteins encoded by at least fourteen distinct genes in mammals. Since the same Cx type can be expressed in different tissues and more than one Cx type can be expressed by the same cell, the thorough identification of which connexin is in which cell type and how connexin expression changes afte...

Highly repeated copies of short interspersed elements (SINEs) occur in eukaryotic genomes. The distribution of each SINE family is usually restricted to some genera, families, or orders. SINEs have an RNA polymerase III internal promoter, which is composed of boxes A and B. Here we propose a method for isolation of novel SINE families based on genomic DNA PCR with oligonucleotide identical to b...

BACKGROUND Research into gene expression enables scientists to decipher the complex regulatory networks that control fundamental biological processes. Quantitative real-time PCR (qPCR) is a powerful and ubiquitous method for interrogation of gene expression. Accurate quantification is essential for correct interpretation of qPCR data. However, conventional relative and absolute quantification m...

Department of Medical Microbiology, St. Bartholomew's Hospital Medical College, London, EC1A 7BE, UK The polymerase chain reaction (PCR) holds great potential for the rapid and sensitive detection of pathogenic microorganisms. (1~ There has been much interest in detecting and preventing falsepositive PCR results owing to product carry-over(2); however, less attention has been paid to false-nega...

use in restriction-enzyme analysis. This procedure is cost-effective because it saves the use of expensive miniprep kits for use with only positively identified recombinant clones and limits typically time-consuming miniprep steps. Our method can be accomplished in a few minutes in two microcentrifuge tubes with minimal enzyme, expense, no phenol/chloroform extractions and no ethanol precipitat...

Abstract Background Respiratory tract infections are the most common that lead to morbidity and mortality worldwide. Early recognition precise diagnosis of microbial etiology is important treat LRTIs promptly, specifically effectively. Objectives To establish a method based on multiplex reverse transcription (MRT)-PCR MassARRAY technology for simultaneous detection 27 respiratory pathogens expl...