Results 71 to 80 of about 338,742 (309)

Characterisation of Polymyxa species by restriction analysis of PCR-amplified ribosomal DNA

open access: yes, 1994
A molecular method is described to aid identification of the obligate parasite Polymyxa and discriminate between species (P. betae and P. graminis) and isolates. DNA was extracted from zoospores, resting spores and roots infected with P.
Mutasa-Göttgens, E. S.   +9 more
core   +1 more source

Molecular phylogeny of brachiopods and phoronids based on nuclear-encoded small subunit ribosomal RNA gene sequences [PDF]

open access: yes, 1998
Brachiopod and phoronid phylogeny is inferred from SSU rDNA sequences of 28 articulate and nine inarticulate brachiopods, three phoronids, two ectoprocts and various outgroups, using gene trees reconstructed by weighted parsimony, distance and maximum ...
A. Gawthrop   +5 more
core   +1 more source

Studies on ribosomal DNA in cetaceans (whales) [PDF]

open access: yesHereditas, 2008
ARNASON U. and WIDEGREN, B. 1984. Studies on ribosomal DNA in cetaceans (whales).—Hereditas 101:149–154. Lund, Sweden. ISSN 0018–0661. Ribosomal DNA (rDNA) of 4 mysticetes and 10 odontocetes were studied by Southern blot hybridization. The material represented all extant cetacean families except the gray whales.
U, Arnason, B, Widegren
openaire   +2 more sources

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

open access: yesFEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Unveiling cryptic species diversity of flowering plants: successful biological species identification of Asian Mitella using nuclear ribosomal DNA sequences

open access: yesBMC Evolutionary Biology, 2009
Background Although DNA sequence analysis is becoming a powerful tool for identifying species, it is not easy to assess whether the observed genetic disparity corresponds to reproductive isolation.
Okuyama Yudai, Kato Makoto
doaj   +1 more source

The Epigenetic Pathways to Ribosomal DNA Silencing [PDF]

open access: yesMicrobiology and Molecular Biology Reviews, 2016
SUMMARY Heterochromatin is the transcriptionally repressed portion of eukaryotic chromatin that maintains a condensed appearance throughout the cell cycle. At sites of ribosomal DNA (rDNA) heterochromatin, epigenetic states contribute to gene silencing and genome stability, which are required for proper chromosome segregation and
Rakesh, Srivastava   +2 more
openaire   +2 more sources

Mutant NPM1 in Acute Myeloid Leukemia Initiation and Maintenance

open access: yesAging and Cancer, EarlyView.
NPM1 mutations drive acute myeloid leukemia by acting as neomorphic transcriptional regulators that cooperate with Menin–MLL and XPO1 to sustain HOX/MEIS1 expression and block differentiation. Targeting these mutant‐specific transcriptional dependencies provides a rational therapeutic strategy for NPM1‐mutated AML.
Yanan Jiang   +3 more
wiley   +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

Direct amplification and differentiation of pathogenic and nonpathogenic Entamoeba histolytica DNA from stool specimens [PDF]

open access: yes, 1994
Discrimination of pathogenic and nonpathogenic Entamoeba histolytica is of great clinical importance. A simple and rapid DNA extraction method that can be used directly with stool specimens was developed without the need for prior cultivation of the ...
Katzwinkel-Wladarsch, S.   +5 more
core   +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

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