Mostrando 18,681 - 18,700 Resultados de 20,464 Para Buscar '"primer"', tiempo de consulta: 0.22s Limitar resultados
  1. 18681
    “…Thus, PCR analyses amplifying a partial T-DNA fragment with AtFT-specific primers are sufficient to determine whether the seedlings are transgenic or not. …”
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  2. 18682
    “…Samples that are avian influenza virus-positive were isolated in embryonated chicken eggs, and the subtypes were identified by RT-PCR with the specific primers. The samples positive for influenza virus H5 were sequenced to identify HA and NA genes. …”
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  3. 18683
    “…Objectives: Development and validation of a single-step and accurate reverse transcriptase loop-mediated isothermal amplification technique (RT-LAMP) for rapid identification of SARS-CoV-2 relative to commercial quantitative reverse transcriptase real-time PCR (qRT-PCR) assays to allow prompt initiation of proper medical care and containment of virus spread. Methods: Primers showing optimal in-silico features were subjected to analytical sensitivity and specificity to assess the limit of detection (LOD) and cross-reaction with closely- and distantly-related viral species, and clinically prominent bacterial and fungal species. …”
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  4. 18684
  5. 18685
    “…DNA from 171 mother‐child pairs (342 samples) was studied for: (a) HLA‐G allele information by the NGSgo‐AmpX HLA‐G assay, (b) 3′UTR haplotype information by an in‐house developed sequence‐based typing method of a 699/713 base pair region in the 3′UTR, and (c) the full phase HLA‐G gene sequence, by combining primers from both assays. The mother to child inheritance allowed internal verification of newly identified alleles and of association between coding and UTR regions. …”
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  6. 18686
    “…HIV genomes were generated from N = 13 plasma specimens by next-generation sequencing of metagenomic libraries prepared with spiked primers targeting HIV, followed by Sanger gap-filling. …”
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  7. 18687
  8. 18688
    “…The current study undertakes the assessment of the genetic variation and population structure of Anagallis foemina L. specimens collected in south-eastern Poland, Volhynian Polesie and West Volhynian Upland based on inter-simple sequence repeats (ISSR) polymorphism. Twenty ISSR primers amplified 374 DNA fragments, of which 79% were polymorphic. …”
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  9. 18689
    “…Selective amplification of target nucleic acid from the samples was achieved by using primers for ORF1a/b non-structural region and the structural protein envelope E-gene of the virus. …”
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  10. 18690
  11. 18691
    “…The cDNA of all positive donors was then analyzed for the presence of various HIV genotypes (types and subtypes) by employing subtype-specific primers in a nested polymerase chain reaction. The amplified products were run on ethidium bromide-stained 2% agarose gel and visualized using a ultraviolet transilluminator. …”
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  12. 18692
    “…Fresh sputum samples were collected for culturing and conducted polymerase chain reaction using BL-specific primers. Among the 101 patients recruited, presence of BL strains could be ascertained in 94 patients of which 24 (26%; 95% CI: 18%–35%) had BL strains. …”
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  13. 18693
    “…We found 780 genotypes and 324 alleles via the 19 microsatellites primers, and the results showed that the mean number of alleles (N(a)) was 17.05; the average polymorphism information content (PIC) was 0.767; the mean expected heterozygosity (He) was 0.662; as for observed heterozygosity (H(o)), it was 0.647. …”
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  14. 18694
  15. 18695
    “…Preliminary polymerase chain reaction screening of six isolates obtained from wheat blast infected samples with diagnostic primers (MoT3F/R) was conducted at ZARI, Zambia, and subsequent analysis of two isolates with MoT3F/R and C17F/R was performed at USDA-ARS, USA. …”
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  16. 18696
    “…The sequence of PCR amplicons showed 100% identity and significant alignment with V. parahaemolyticus. The primers used provided high specificity for V. parahaemolyticus in PCR detection compared with another Vibrio species. …”
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  17. 18697
  18. 18698
    “…Overlap polymerase chain reaction (PCR) using different primers for 5ˈ and 3ˈ end of each segment produced fusion segment 1 + 2 and (1 + 2) +3 fragments and was used for cloning. …”
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  19. 18699
    “…The objective of this study was to firstly develop and apply a CPA assay with propidium monoazide (PMA) for the rapid detection of the foodborne E. coli O157:H7 in VBNC state. Five primers (2a/1s, 2a, 3a, 4s, and 5a) were specially designed for recognizing three targets, which were rfbE, stx1, and stx2, and evaluated for its effectiveness in detecting VBNC cell of E. coli O157:H7 with detection limits of pure VBNC culture at 10(3), 10(5), and 10(5) colony-forming units (CFUs)/ml for rfbE, stx1, and stx2, respectively, whereas those of food samples (frozen pastry and steamed bread) were 10(3), 10(5), and 10(5) CFUs/ml. …”
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  20. 18700
    “…Using a combination of high-throughput sequencing, abutting primers-based PCR recovery of circular genomic elements, cloning, and Sanger sequencing, we detected 97 novel sequences comprising 40 ssDNA viral genomes and 57 viral-like circular molecules from 45 individual penguins. …”
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