Results 21 to 30 of about 2,213,349 (340)

NK-B cell cross talk induces CXCR5 expression on natural killer cells

iScience, 2021
Summary: B cell follicles (BCFs) in lymph nodes (LNs) are generally exempt of CD8+ T and NK cells. African green monkeys (AGMs), a natural host of simian immunodeficiency virus (SIV), display NK cell-mediated viral control in BCF.
Philippe Rascle, Béatrice Jacquelin, Caroline Petitdemange, Vanessa Contreras, Cyril Planchais, Marie Lazzerini, Nathalie Dereuddre-Bosquet, Roger Le Grand, Hugo Mouquet, Nicolas Huot, Michaela Müller-Trutwin   +10 more
doaj   +1 more source

Persistent triangulations [PDF]

Journal of Functional Programming, 2001
Triangulations of a surface are of fundamental importance in computational geometry, computer graphics, and engineering and scientific simulations. Triangulations are ordinarily represented as mutable graph structures for which both adding and traversing edges take constant time per operation.
Blelloch, Guy, Burch, Hal, Crary, Karl, Harper, Robert, Miller, Gary, Walkington, Noel   +5 more
openaire   +2 more sources

Is Persistent Memory Persistent? [PDF]

Queue, 2020
Power failures pose the most severe threat to application data integrity, and painful experience teaches that the integrity promises of failure-atomic update mechanisms can’t be taken at face value. Diligent developers and operators insist on confirming integrity claims by extensive firsthand tests.
openaire   +2 more sources

Persistence and clearance of viral RNA in 2019 novel coronavirus disease rehabilitation patients

Chinese Medical Journal, 2020
Background: A patient's infectivity is determined by the presence of the virus in different body fluids, secretions, and excreta. The persistence and clearance of viral RNA from different specimens of patients with 2019 novel coronavirus disease (COVID ...
Y. Ling, Shuibao Xu, Yixiao Lin, D. Tian, Zhaoqin Zhu, Fahui Dai, Fan Wu, Zhigang Song, Wei Huang, Jun Chen, Bijie Hu, Sheng Wang, E. Mao, Lei Zhu, Wenhong Zhang, Hong Zhou Lu   +15 more
semanticscholar   +1 more source

Ripser: efficient computation of Vietoris–Rips persistence barcodes [PDF]

Journal of Applied and Computational Topology, 2019
We present an algorithm for the computation of Vietoris–Rips persistence barcodes and describe its implementation in the software Ripser. The method relies on implicit representations of the coboundary operator and the filtration order of the simplices ...
Ulrich Bauer
semanticscholar   +1 more source

Prophages and Growth Dynamics Confound Experimental Results with Antibiotic-Tolerant Persister Cells

mBio, 2017
Bacterial persisters are phenotypic variants that survive antibiotic treatment in a dormant state and can be formed by multiple pathways. We recently proposed that the second messenger (p)ppGpp drives Escherichia coli persister formation through protease
Alexander Harms, Cinzia Fino, Michael A. Sørensen, Szabolcs Semsey, Kenn Gerdes   +4 more
doaj   +1 more source

Environmental Chemistry and Ecotoxicology of Hazardous Heavy Metals: Environmental Persistence, Toxicity, and Bioaccumulation

Journal of chemistry, 2019
Heavy metals are well-known environmental pollutants due to their toxicity, persistence in the environment, and bioaccumulative nature. Their natural sources include weathering of metal-bearing rocks and volcanic eruptions, while anthropogenic sources ...
H. Ali, Ezzat Khan, I. Ilahi
semanticscholar   +1 more source

PasT of Escherichia coli sustains antibiotic tolerance and aerobic respiration as a bacterial homolog of mitochondrial Coq10

MicrobiologyOpen, 2020
Antibiotic‐tolerant persisters are often implicated in treatment failure of chronic and relapsing bacterial infections, but the underlying molecular mechanisms have remained elusive.
Cinzia Fino, Martin Vestergaard, Hanne Ingmer, Fabien Pierrel, Kenn Gerdes, Alexander Harms   +5 more
doaj   +1 more source

Persistence of SARS-CoV-2 in Water and Wastewater

Environmental Science and Technology Letters, 2020
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA is frequently detected in the feces of infected individuals. While infectious SARS-CoV-2 has not previously been identified in wastewater, infectious SARS-CoV-2 has been isolated from the ...
A. Bivins, J. Greaves, R. Fischer, K. C. Yinda, W. Ahmed, M. Kitajima, V. Munster, K. Bibby   +7 more
semanticscholar   +1 more source

Antibiotic resistance and persistence—Implications for human health and treatment perspectives

EMBO Reports, 2020
Antimicrobial resistance (AMR) and persistence are associated with an elevated risk of treatment failure and relapsing infections. They are thus important drivers of increased morbidity and mortality rates resulting in growing healthcare costs ...
M. Huemer, Srikanth Mairpady Shambat, S. Brugger, A. Zinkernagel   +3 more
semanticscholar   +1 more source