Showing 521 - 540 results of 5,516 for search '"DNA', query time: 0.06s Refine Results
  1. 521
  2. 522

    DNA 引物酶的提取分离与引物合成活性的研究 by 朱孝峰 刘宗潮 谢冰芬 潘启超 冯公侃 李奕荪

    Published 1997-01-01
    “…摘 要 以小鼠艾氏腹水癌细胞经超声破碎的提取液为材料, 依次用DE-52 和P-11 层析柱进行离子线性洗脱, 分别在KCl浓度为0.17~ 0.2 mol/ L 和0.25 ~ 0.27 mol/ L 处DNA 引物酶被洗脱下来。用大肠杆菌大片段DNA 多聚 酶Ⅰ 延长引物法检测DNA 引物酶比活性为8753 U/ mg ,酶总获得为22.1 %。…”
    Get full text
    Article
  3. 523
  4. 524
  5. 525
  6. 526
  7. 527

    Polystyrene nanoplastics promote colitis-associated cancer by disrupting lipid metabolism and inducing DNA damage by Shan Tian, Ruixue Li, Jiao Li, Jinhui Zou

    Published 2025-01-01
    “…PS-NPs exposure disturbed lipid metabolism and induced DNA damage via the activation of PI3K/AKT/mTOR to promote CAC progression. …”
    Get full text
    Article
  8. 528

    Environmental DNA and its role in identifying yeast biodiversity in mangrove ecosystem: A literature review by Kusuma Rahayu Lila, Retnaningsih Soeprobowati Tri, Warsito Budi

    Published 2025-01-01
    “…This study explores the use of environmental DNA (eDNA) as an alternative method for identifying yeast species in mangrove ecosystems, addressing data gaps left by conventional methods. …”
    Get full text
    Article
  9. 529

    DNA barcoding reveals an unexpected distribution of two Megaleporinus species in the La Plata Basin system by Florencia Paola Coronel, Gisela Loretán, Gisela Loretán, Gisela Loretán, Sebastián Sanchez, Sebastián Sanchez, Natalia Silva, Natalia Silva, Gualberto Pacheco-Sierra, Florencia Brancolini, Florencia Brancolini, Danilo Aichino, Facundo Vargas, Pablo Scarabotti, Pablo Scarabotti, Luis Espínola, Luis Espínola, Carla Simone Pavanelli, Eva Carolina Rueda, Eva Carolina Rueda

    Published 2025-01-01
    “…Despite various approaches, including cytogenetics, molecular data, and morphological analysis, the taxonomic classification of the boga fish remains debated among researchers, resulting in discrepancies in the literature.MethodsThis study aimed to assess the diversity of specimens captured in the La Plata River Basin, initially classified as Megaleporinus obtusidens by fishers, using DNA barcoding. The mitochondrial COI marker was employed to explore species assignment and genetic diversity in Megaleporinus, a genus with high commercial exploitation in the southern area of the La Plata Basin.ResultsOur findings indicate that some boga samples, previously identified as M. obtusidens, are actually M. piavussu. …”
    Get full text
    Article
  10. 530

    DNA Methylation May be Involved in the Analgesic Effect of Hyperbaric Oxygen via Regulating FUNDC1 by Kun Liu, Hao Wu, Rui Gao, Guang Han

    Published 2020-01-01
    “…Lumbar (L)4 and L5 dorsal root ganglia (DRGs) were used to assess expression of DNA methyltransferase (DNMT)1, DNMT3a, and DNMT3b by western blotting and RT-PCR. …”
    Get full text
    Article
  11. 531

    DNA Ploidy and S-Phase Fraction in Carcinoma of the Gallbladder Related to Histopathology, Number of Gallstones and Survival 1 by Ulf Gustafsson, Curt Einarsson, Lennart C. Eriksson, Virgil Gadaleanu, Staffan Sahlin, Bernhard Tribukait

    Published 2001-01-01
    “…The distribution of DNA ploidy shifted from tetraploid in low stage towards triploid positions in high stage tumours (p=0.02) combined with higher S‐phase values in triploid tumours (p=0.05). …”
    Get full text
    Article
  12. 532
  13. 533
  14. 534
  15. 535
  16. 536
  17. 537

    HCV 广东株5’NCRc DNA的克隆及序列测定 by 李 刚 姚集鲁 彭文伟 王 斌 吕 凌

    Published 1997-01-01
    “…本文的测序结果可为引物设计提供依据。获得的HCV cDNA在常规PCR步骤中用于设立有效的模板对照, 对消除假阴性及评估试剂有重要意义。…”
    Get full text
    Article
  18. 538
  19. 539

    Phosphorylation-dependent WRN-RPA interaction promotes recovery of stalled forks at secondary DNA structure by Alessandro Noto, Pasquale Valenzisi, Flavia Di Feo, Federica Fratini, Tomasz Kulikowicz, Joshua A. Sommers, Benedetta Perdichizzi, Maurizio Semproni, Valentina Palermo, Marco Crescenzi, Robert M. Brosh Jr, Annapaola Franchitto, Pietro Pichierri

    Published 2025-01-01
    “…The absence of WRN-RPA binding hampers fork recovery, causing single-strand DNA gaps, enlarged by MRE11, and triggering MUS81-dependent double-strand breaks, which require repair by RAD51 to prevent excessive DNA damage.…”
    Get full text
    Article
  20. 540

    Formation, Repair, and Genotoxic Properties of Bulky DNA Adducts Formed from Tobacco-Specific Nitrosamines by Lisa A. Peterson

    Published 2010-01-01
    “…These Group 1 human carcinogens are metabolized to reactive intermediates that alkylate DNA. This paper focuses on the DNA pyridyloxobutylation pathway which is common to both compounds. …”
    Get full text
    Article