Discrimination between the amplification of mRNA and contaminating genomic DNA is a common problem when performing a reverse transcriptase-polymerase chain reaction (RT-PCR). Even after treatment of the samples with DNAse, it is possible that negative controls (samples in which no reverse transcriptase was added) will give positive results. This indicates that there was amplification of DNA, wh...

A Tritrichomonas foetus-specific 5' Taq nuclease assay using a 3' minor groove binder-DNA probe (TaqMan MGB) targeting conserved regions of the internal transcribed spacer-1 (ITS-1) was developed and compared to established diagnostic procedures. Specificity of the assay was evaluated using bovine venereal microflora and a range of related trichomonad species. Assay sensitivity was evaluated wi...

Multiple sclerosis (MS) is a multifactorial neurodegenerative disease. Low levels of vitamin D are risk factor for MS and alterations in the receptor (VDR) might be as well. This study aimed to evaluate whether VDR rs731236 (Taq-I) rs4334089 (HpyCH4V) gene polymorphisms protein expression associated with severity. Vitamin plasma were analyzed group patients. Additional analyses patients differe...

We investigated the use of Taq dye primer and Taq terminator sequencing chemistry to optimize the quality of sequence data obtained from templates containing homopolymer tracts and repetitive elements. In direct side-by-side comparisons using the Applied Biosystems Model 373A Fluorescent Sequencer, the Taq terminator sequencing chemistry gave much cleaner and more consistent results on long hom...

dna amplification using taq dna polymerase is one of the most widely used techniques in molecular biology and biotechnology. the aim of this study was to amplify the gene of this enzyme from a thermophilic bacteria called thermus aqauticus and clone it into a vector for future use. using specific primers the cdna of taq dna polymerase was amplified and ligated into the cloning vector ptz57r usi...

BACKGROUND: Clinical specimens are routinely fixed in 10% buffered formalin and paraffin embedded. Although DNA is commonly extracted from fixed tissues and amplified by PCR, the effects of formalin fixation are relatively unknown. Formalin fixation is known to impair PCR, presumably through damage that blocks polymerase elongation, but an insidious possibility is error prone translesion synthe...