in this study a nested-pcr assay was optimized for detection of two bvdv biotype of nadl strain. a part of 5' non-coding region of virus, 249 bp in size, was amplified in rt-pcr. pcr product was cloned in a ptz57r/t vector and sequencing results confirmed the specificity of the test. internal primers were designed and a 155 bp dna fragment was amplified in nested-pcr. the sensitivity of rt...

Human Adenovirus (HADV) is classified in Adenoviridae family, it important viral pathogen of respiratory tract infection (RTIs) among children. This study aimed at detecting HADV infections hospitalized children under 10 years old with Salahaldin Governorate, addition to compare different diagnostic methods for the detection this virus.
 Nasopharyngel Swabs (NPS) and whole blood samples we...

To assess the utility of a polymerase chain reaction (PCR)-based method for diagnosis of Wuchereria bancrofti infection, blood, plasma, and paraffin-embedded tissue samples were tested using a PCR-based assay that detects a W. bancrofti-specific repetitive DNA sequence. The assay was positive in 100 microL of blood from 40 of 42 microfilaria-positive subjects, the 2 subjects with negative assay...

background and aims: accurate and rapid diagnosis is necessary for effective control and prevention of foot-and-mouth disease (fmd). in present study, was evaluated real time reverse transcription-polymerase chain reaction (rrt-pcr) assay along with diagnostic routine methods for the detection of all seven serotypes of fmd virus (fmdv), namely o, c, a, sat1, 2, 3 and asia 1 in biological sample...

BACKGROUND Small ruminant lentiviruses (SRLV) are members of the Retroviridae family and infect goats and sheep worldwide. Detection of specific antibodies using AGID and ELISA is the most commonly used means of diagnosing SRLV infection. The most frequent molecular method for detecting the provirus genome is PCR, using peripheral blood leucocytes as target cells. Real time PCR has also recentl...

The use of reverse transcription (RT) PCR for relative quantitation of gene transcripts relies on the reproducibility of the individual RT, PCR and product measurement steps. Semi-competitive RT-PCR (RT-cPCR) uses an internal competitor template in the PCR step to improve quantitation. We have surveyed the reproducibility of RT, PCR, RT-cPCR and measurement, amplifying the glyceraldehyde-3-phos...

BACKGROUND AND OBJECTIVES To assess the cost and effectiveness of adding a system of polymerase chain reaction (PCR) testing to the current enzyme-linked immunosorbent assay (ELISA) screening for hepatitis C virus (HCV) in blood donations. MATERIALS AND METHODS We performed a cost-effectiveness analysis comparing three HCV screening strategies in French blood donors: detection of antibodies a...

The present study aimed to investigate the presence and prevalence of Cryptosporidium amongimmunocompromised patients in Wasit Hospitals health centers determine best method for itsdiagnosis. started from 1st August end November 2020. One hundred forty stoolsamples were collected immunocompromised both genders who attended hospitaland at province. Stool samples inspected by modified acid-fast s...

Equine herpesvirus-1 (EHV-1) infection is of significant animal welfare and economic importance. Yet, no standardised molecular techniques are available for diagnosis or confirmation of viral infection. The purpose of this study was to develop a standardised and quantitative assay system for the reliable detection of EHV-1 infection which was capable of eliminating the likelihood of false negat...

Avian leukosis viruses (ALVS) cause different types of tumours in poultry and can affect the health and egg production of the birds. To investigate the presence of the virus in chicken layer flocks in Shiraz, 222 egg albumen from local layer breeder (25 eggs), local layer grand parent (30 eggs), broiler breeder (60 eggs), commercial layer (46 eggs) and broiler grand parent (61 eggs) were tested...