background &objective: breast cancer is the most common female malignancy. detection of dna of human papillomaviruses (hpvs) in breast carcinomas suggests that the virus may play a role in the pathogenesis of this disease. the aim of this study was to evaluate the frequency of hpvs genotypes 6, 11, 16, 18 and 31 in paraffin-embedded tissue samples of invasive breast carcinomas. methods: thr...

canine parvovirus type 2 (cpv-2) is one of the most common viruses responsible for acute hemorrhagic enteritis in dogs. a rapid and accurate diagnosis of cpv-2 infection is especially important in kennels in order to isolate infected dogs. the aim of the present study was to compare two laboratory tests i.e., polymerase change reaction (pcr) and immunochromatography assay (ica) most commonly us...

chlamydia pneumoniae is a common respiratory pathogen which is often found in our paediatric populations. many patients with community-acquired pneumonia caused by c. pneumoniae have symptoms suggestive of sinusitis.the role of c. pneumonia in rhinosinusiits children (meanage =4.3 ±2.5year). this case control study was done in the pediatric and ent clinics of hazrat rasul hospital in tehran (20...

conclusions: pcr method is a valuable, cost-effective and alternative tool for quick diagnosis of active tuberculosis in different clinical specimens. results: the concordance rate between the three sets of primers was calculated and is6110/buffer pcr method showed good agreement with the lj culture method (κ = 0.627, p < 0.0001). the sensitivity of is6110/buffer pcr was 58.33%, with specificit...

A minute of silence. Kary Banks Mullis has died (08/07/2019). was an American Biochemist and Doctor Chemistry who developed the Polymerase Chain Reaction (PCR) in 1985, considered one most important legacies history Humanity, along with description DNA (Watson, Crick Franklin) theory Relativity (Einstein). Currently, I consider anyone does not know PCR by to be illiterate, since it is a molecul...

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...

Reverse transcriptase polymerase chain reaction (RT-PCR) has become a well-established and powerful molecular technique for studying ribonucleic acids. It is used in medical diagnostics for detecting viral RNA, in hematology and oncology for detecting chimeric transcripts of rearranged genes (1), and in the broad area of research applications in gene expression studies. Since its introduction (...