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  1. 3581
    “…We used DNA metabarcoding of skink fecal samples to identify animals (COI) and plants (ITS2) consumed by skinks. There were 389 dietary presence counts belonging to 77 dietary taxa found across the 73 Telfair's skink fecal samples. …”
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    DNA metabarcoding reveals introduced species predominate in the diet of a threatened endemic omnivore, Telfair’s skink (Leiolopisma telfairii)
  2. 3582
    “…The cytochrome oxidase subunit I (COI) gene was amplified and analyzed for 70 Mediterranean Chondrosia reniformis, collected from eight localities in Tunisia. …”
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    First insight of genetic diversity, phylogeographic relationships, and population structure of marine sponge Chondrosia reniformis from the eastern and western Mediterranean coasts of Tunisia
  3. 3583
    “…Here, population genetic parameters were inferred from the analysis of 168 individuals belonging to 11 populations of the South American grasshopper, Dichroplus vittatus, distributed in two Argentinean Biomes (Grassland and Savanna), by sequencing a 543 bp of the mitochondrial COI gene. Overall, we detected considerable haplotype diversity and low nucleotide diversity. …”
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    Evolutionary history and colonization patterns of the wing dimorphic grasshopper Dichroplus vittatus in two Argentinean biomes
  4. 3584
    “…This study adopted both morphological and molecular approaches for species delimitation.The phylogenetic position of the Sabah P.femoristriga was revealed by the mitochondrial cytochrome c oxidase gene (COI) marker. This represents the first record of the species in the coastal waters of Sabah, despite its wide geographical distribution in the Indo-West Pacific. …”
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    A new record of the spiny lobster, Panulirusfemoristriga (von Martens, 1872) from the coastal waters of Malaysia, with revision of global distribution
  5. 3585
    “…The library contains 2,758 sequences (2,205 COI and 553 16S) from 2260 specimens (four crocodilians, 37 turtles, and 2,219 lizards, including snakes), representing 583 named species, from 52 countries. …”
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    DNA barcoding of the National Museum of Natural History reptile tissue holdings raises concerns about the use of natural history collections and the responsibilities of scientists in the molecular age
  6. 3586
    “…Therefore, we analysed mitochondrial (COI, NDI) and nuclear (EF1α, RPS5) gene sequences and compared them with sequences from the sister species Erebia melas. …”
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    Pronounced mito-nuclear discordance and various Wolbachia infections in the water ringlet Erebia pronoe have resulted in a complex phylogeographic structure
  7. 3587
    “…An anti-HBc > 3 cut-off index (COI) plus anti-HBs persistently/declining to <50 mIU/mL was predictive for HBV-R (OR (95% CI): 9.1 (2.7–30.2); 63% of patients with vs. 15% without this combination experienced HBV-R (p < 0.001)). …”
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    Highly Sensitive HBsAg, Anti-HBc and Anti HBsAg Titres in Early Diagnosis of HBV Reactivation in Anti-HBc-Positive Onco-Haematological Patients
  8. 3588
    “…Most type materials were examined, and a preliminary phylogeny is presented based on a combined dataset of COI, 16S rRNA, 28S rRNA and EF-1α gene regions. …”
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    A revision of the genus Ecpyrrhorrhoe Hübner, 1825 from China based on morphology and molecular data, with descriptions of five new species (Lepidoptera, Crambidae, Pyraustinae)
  9. 3589
    “…He presented a negative result for the detection of SARS-CoV-2 antigen, negative SARS-CoV-2 IgM/IgG serology positive (lateral flow immunochromatography test), in addition to total IgM/IgG antibodies in 11.88 COI by means of a test of electrochemiluminescence. …”
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    Spontaneous resolution of intussusception after COVID-19 infection found at laparoscopy in a 6-year-old
  10. 3590
    “…We revisited this result by collecting new morphometric, meristic, and genetic data (COI mitochondrial gene) for 24 individuals distributed along La Plata River Basin in Argentina, and discussed our results in the context of multiple biogeographic processes of isolation in that basin. …”
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    Molecular and morphological evidence revalidates Acrobrycontarijae (Characiformes, Characidae) and shows hidden diversity
  11. 3591
    “…Conversely, 633 bp mitochondrial COI barcode sequences from this set of flies were polyphyletic with respect to R. pomonella and R. zephyria. …”
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    Partial Ribosomal Nontranscribed Spacer Sequences Distinguish Rhagoletis zephyria (Diptera: Tephritidae) From the Apple Maggot, R. pomonella
  12. 3592
    “…We conducted a DNA barcoding study in three cities within Mexico (Mazatlan, Mexico City and Cancun) and sequenced the COI gene in 376 fish samples sold as 48 distinct commercial names at fish markets, grocery stores, and restaurants. …”
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    DNA barcoding reveals global and local influences on patterns of mislabeling and substitution in the trade of fish in Mexico
  13. 3593
    “…The results identified the highest mutation frequencies in nicotinamide adenine dinucleotide hydride (NADH) dehydrogenase subunit 4 gene (ND4) and cytochrome c oxidase subunit 1 gene (COI), which also harbored the highest rates of G > A substitutions, with most of the mutations resulting in changes in the polarity of amino acids. …”
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    Thyroid Cancer-Associated Mitochondrial DNA Mutation G3842A Promotes Tumorigenicity via ROS-Mediated ERK1/2 Activation
  14. 3594
    “…Biometric differences on the morphology of adults as well the genetic variability were determined by taxonomical and molecular (mitochondrial COI gene) characterization techniques. The identity of the mites from both populations was confirmed as P. latus based on taxonomic characters. …”
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    Morphological and genetic characterization of the broad mite Polyphagotarsonemus latus Banks (Acari: Tarsonemidae) from two Mexican populations
  15. 3595
    “…Specimens obtained through diverse collecting methods at 1,858 sites across Pakistan from 2010–2019 were examined for sequence variation in the 658 bp barcode region of the cytochrome c oxidase 1 (COI) gene. Sequences from nearly 49,000 specimens were assigned to 6,590 Barcode Index Numbers (BINs), a proxy for species, and most (88%) also possessed a representative image on the Barcode of Life Data System (BOLD). …”
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    A DNA barcode survey of insect biodiversity in Pakistan
  16. 3596
    “…In addition, we assessed the genetic distance based on the generated mitochondrial partial COI DNA barcodes to detect cryptic diversity across these taxa. …”
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    DNA Barcoding of Potential Mosquito Disease Vectors (Diptera, Culicidae) in Jazan Region, Saudi Arabia
  17. 3597
    “…Stratified analyses were performed to investigate underlying effect modification of RD risk by sex, age, and season. The cost of illness (COI) approach was applied to evaluate the related economic losses caused by PM. …”
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    Impact of Particulate Matter on Hospitalizations for Respiratory Diseases and Related Economic Losses in Wuhan, China
  18. 3598
    “…Using the nucleotide sequence of the 5’ end of the mitochondrial COI gene as a molecular marker, the genetic p-distance between the new species and its congeners far exceeds the usual 2%, granting the former the status of an independent taxon, which is in accordance with the morphological identification. …”
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    Gaidropsarus gallaeciae (Gadiformes: Gaidropsaridae), a New Northeast Atlantic Rockling Fish, with Commentary on the Taxonomy of the Genus †
  19. 3599
    “…Based on per-protocol analysis, M2BPGi levels showed a significant decrease (–2.2  cut-off index [COI], P < .0001) at week 48 after treatment initiation. …”
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    Sofosbuvir-based therapies associated with regression of liver fibrosis in patients with hepatitis C virus infection: A prospective observational study
  20. 3600
    “…Primers were designed to anneal with cytochrome oxidase subunit I (COI) sequences of Platygaster and Mesopolobus genera while protocols were developed to be fast and capable to process several samples at the same time. …”
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    A new PCR based molecular method for early and precise quantification of parasitization in the emerging olive pest Dasineura oleae
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