Abstract The present study aimed to evaluate a methodology for active surveillance of visceral leishmaniasis by detecting Leishmania DNA in organs wild road-killed animals from November 2016 October 2018 the North Paraná, Brazil. collection points were georeferenced. autopsied and samples bone marrow, lymph node, liver, spleen, ear skin collected. Genomic was extracted subjected PCR amplificati...

Background and Objective: In Indonesia, diphtheria cases caused by Corynebacterium diphtheriae are still occurring until today. One of the causes is probably the diphtheria toxin repressor (dtxR) gene which influences toxin expression. Therefore, in this study the characterization of the gene was performed to determine the mutations that affect the DtxR protein.   Methods: The dtxR genes of ...

DNA barcoding surveys of small insects usually extract DNA from either a complete insect or a leg. Little is known about how to optimize DNA quantity and quality from different insect parts while preserving a morphological voucher. Here, we quantify DNA yield from different body parts (antenna, hind leg, forewing, hind wing and abdomen) of the micro-moth Cameraria ohridella (Lepidoptera: Gracil...

The 454 Genome Sequencer (GS) FLX System is one of the next-generation sequencing systems featured by long reads, high accuracy, and ultra-high throughput. Based on the mechanism of emulsion PCR, a unique DNA template would only generate a unique sequence read after being amplified and sequenced on GS FLX. However, biased amplification of DNA templates might occur in the process of emulsion PCR...

High-throughput sequencing technologies frequently necessitate the use of PCR for sequencing library amplification. PCR is a sometimes enigmatic process and is known to introduce biases. Here we perform a simple amplification-sequencing assay using 10 commercially available polymerase-buffer systems to amplify libraries prepared from both modern and ancient DNA. We compare the performance of th...

This study aimed to evaluate three sets of B1 gene DNA primer for the diagnosis Toxoplasma gondii. The gondii that stored on liquid nitrogen was isolated using DNAzol™ reagent. first step Polymerase Chain Reaction (PCRs) performed external and internal sets, respectively, then nPCR. PCR products sequencing by Apical Science. All sequences were analysed CLC Sequence Viewer Version 8.0 software c...

objective(s):  more than 1500 registered mutations in cystic fibrosis transmembrane regulator (cftr) gene are responsible for dysfunction of an ion channel protein and a wide spectrum of clinical manifestations in patients with cystic fibrosis (cf). this study was performed to investigate the frequency of a number of well-known cftr mutations in north eastern iranian cf patients. material and m...

conclusions we concluded from the results that the frequency of emb-resistant m. tuberculosis cases in iran is lower than that of many other regions. the pcr-sscp technique can separate resistant isolates from sensitive isolates. the sequencing results of this study showed mutation in codons 309 and 299 of the embb gene. in none of the resistant isolates, mutation was observed in codon 306. fur...