Results 101 to 110 of about 2,892,023 (342)

Molecular and ultrastructure characterization of two nematodes (Thelandros scleratus and Physalopteroides dactyluris) based on ribosomal and mitochondrial DNA sequences

open access: yesHelminthologia, 2016
The phylogenetic relationships of the nematode species Thelandros scleratus (Oxyurida: Pharyn-godonidae) and Physalopteroides dactyluris (Spirurida: Physalopteridae) were analyzed using the ribosomal 18S rRNAand the mitochondrial cytochrome C oxidase ...
Goswami U   +3 more
doaj   +1 more source

Cloning and sequencing of the complicated rDNA gene family of Bos taurus

open access: yesCzech Journal of Animal Science, 2006
The rDNA genes coding for ribosomal RNA (rRNA) in animals are repeat sequences with high GC content and complicated structure. Based on the sequences of human ribosomal DNA repeat unit and transcription unit and the long and accurate PCR method with LA ...
D. Tang   +5 more
doaj   +1 more source

Metaxa : a software tool for automated detection and discrimination among ribosomal small subunit (12S/16S/18S) sequences of archaea, bacteria, eukaryotes, mitochondria, and chloroplasts in metagenomes and environmental sequencing datasets [PDF]

open access: yes, 2011
Peer ...
Abarenkov, Kessy   +9 more
core   +1 more source

Genome differentiation in a species pair of coregonine fishes: an extremely rapid speciation driven by stress-activated retrotransposons mediating extensive ribosomal DNA multiplications

open access: yesBMC Evolutionary Biology, 2013
BackgroundSympatric species pairs are particularly common in freshwater fishes associated with postglacial lakes in northern temperate environments. The nature of divergences between co-occurring sympatric species, factors contributing to reproductive ...
R. Symonová   +7 more
semanticscholar   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

open access: yesAdvanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam   +8 more
wiley   +1 more source

ABH2 Couples Regulation of Ribosomal DNA Transcription with DNA Alkylation Repair

open access: yesCell Reports, 2013
Transcription has been linked to DNA damage. How the most highly transcribed mammalian ribosomal (rDNA) genes maintain genome integrity in the absence of transcription-coupled DNA damage repair is poorly understood.
Pishun Li   +7 more
doaj   +1 more source

Infusible Extracellular Matrix Biomaterial Enhances Cell‐Specific Pro‐Repair Responses Following Acute Myocardial Infarction

open access: yesAdvanced Healthcare Materials, EarlyView.
We measure the cell‐specific responses of administering infusible ECM (iECM) in acute myocardial infarction (MI) across multiple timepoints. Using single‐nucleus RNA sequencing and spatial transcriptomics, we measure macrophage activation, fibroblast remodeling, increased vascular development, lymphangiogenesis, cardioprotection, and neurogenesis ...
Joshua M. Mesfin   +18 more
wiley   +1 more source

Catalogue of fungi in China 2. Ramaria from northern China

open access: yesMycology
The species of Ramaria are coralloid-fungi with intricately branched and vividly coloured basidiomata. There are many studies on the genus Ramaria in China, but molecular phylogenetic analysis is rarely employed.
Ying Li   +4 more
doaj   +1 more source

Molecular systematics of the Phyllachorales (ascomycota, fungi) based on 18S ribosomal DNA sequences

open access: yesBrazilian Archives of Biology and Technology, 2003
In order to evaluate the monophyly of the Phyllachorales from a molecular standpoint and elucidate its phylogenetic relationships with other orders, a segment of the 18S rRNA gene from several representatives of the Phyllachorales, including species of ...
Denise Wanderlei-Silva   +2 more
doaj   +1 more source

SiO2‐CaOCME/Poly(Tetrahydrofuran)/Poly(Caprolactone) 3D‐Printed Scaffolds Drive Human‐Bone Marrow Stromal Cell Osteogenic Differentiation

open access: yesAdvanced Healthcare Materials, EarlyView.
3D printed hybrid scaffolds combining bioactive silica–calcium chemistry with elastic polymers guide human bone stem cells to form bone. The scaffolds support cell survival, organization, and invasion while releasing osteogenic ions. Together, architecture and composition drive bone‐specific gene expression, extracellular matrix organization, and ...
David R. Sory   +3 more
wiley   +1 more source

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