Abstract Sample pooling strategy was intended to determine the optimal parameters for group testing of pooled specimens detection SARS-CoV-2 and process them without significant loss test usability. Standard molecular diagnostic laboratory equipment, commercially available centrifugal filters, RNA isolation kits SARS Cov2 PCR tests were used. The basic idea combine concentrate several samples m...

objective(s) this study planned to assess the value of pcr is6110 assay in tissue specimens of needle pleural biopsy in patients suspicious to pleural tuberculosis. materials and methods sixty eight patients with lymphocytic exudative pleural effusion underwent pleural biopsy. tissue samples were sent for pathologic examination and pcr is6110 assay. the results of pcr reported as positive/ nega...

The amount and structural integrity of organellar DNAs change during plant development, although the mechanisms of change are poorly understood. Using PCR-based methods, we quantified DNA damage, molecular integrity, and genome copy number for plastid and mitochondrial DNAs of maize seedlings. A DNA repair assay was also used to assess DNA impediments. During development, DNA damage increased a...

BACKGROUND Control of the global burden of tuberculosis is obstructed due to lack of simple, rapid and cost effective diagnostic techniques that can be used in resource poor-settings. To facilitate the early diagnosis of TB directly from clinical specimens, we have standardized and validated the use of nested multiplex PCR, targeting gene fragments IS6110, MTP40 and 32kD α-antigen encoding gene...

We have established a real-time fluorescent quantitative PCR system that can detect wheat crown rot rapidly and accurately quantify fungi, Fusarium species pseudograminearum in the rhizosphere soil of infected through standard curve produced, with view to early stage Provide help predicting occurrence rot.

The reverse transcription-polymerase chain reaction (RT-PCR) is the most sensitive method used to evaluate gene expression. Although many advances have been made since quantitative RT-PCR was first described, few reports deal with the mathematical bases of this technique. The aim of the present study was to develop and standardize a competitive PCR method using standard-curves to quantify trans...

Parvovirus B19 (B19) is a human pathogen transmitted to susceptible individuals via respiratory secretions and contaminated blood or blood products. B19 levels in pooled plasma of less than 10(4) genome equivalents/ml may not be infectious, while those greater than 10(7)/ml are capable of transmitting infection. A World Health Organization (WHO) B19 DNA international standard has been recently ...

Background and objectives: Cutaneous leishmaniasis is endemic in most areas of Iran, and the diagnosis of its species is essential for controlling the disease. Leishmania major is the causative agent for cutaneous leishmaniasis in humans. Molecular methods are generally more sensitive than microscopic methods. The present study aimed to use a polymerase chain reaction-enzyme linked immunosorben...

Human cytomegalovirus (CMV) has historically been the major infectious cause of morbidity and mortality among patients receiving hematopoietic cell or organ transplant. Standard care in a transplant setting involves frequent monitoring of CMV viral load over weeks to months to determine when antiviral treatment may be required. Quantitative PCR (qPCR) is the standard molecular diagnostic method...

We had been unsuccessful to amplify desired nucleotide sequences from various environmental DNA samples by using the inverse polymerase chain reaction (IPCR) technique, most probably because the copy numbers of target DNA sequences had been quite low. To enrich the target DNA sequences prior to IPCR, a rolling-circle amplification was used with a site-specific primer containing locked nucleic a...