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Träfflista för sökning "WFRF:(Sandberg Jonas) "

Sökning: WFRF:(Sandberg Jonas)

  • Resultat 1-10 av 195
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1.
  • Mold, Jeff E., et al. (författare)
  • Divergent clonal differentiation trajectories establish CD8(+) memory T cell heterogeneity during acute viral infections in humans
  • 2021
  • Ingår i: Cell Reports. - : Elsevier BV. - 2211-1247. ; 35:8
  • Tidskriftsartikel (refereegranskat)abstract
    • The CD8(+) T cell response to an antigen is composed of many T cell clones with unique T cell receptors, together forming a heterogeneous repertoire of effector and memory cells. How individual T cell clones contribute to this heterogeneity throughout immune responses remains largely unknown. In this study, we longitudinally track human CD8(+) T cell clones expanding in response to yellow fever virus (YFV) vaccination at the single-cell level. We observed a drop in clonal diversity in blood from the acute to memory phase, suggesting that clonal selection shapes the circulating memory repertoire. Clones in the memory phase display biased differentiation trajectories along a gradient from stem cell to terminally differentiated effector memory fates. In secondary responses, YFV- and influenza-specific CD8(+) T cell clones are poised to recapitulate skewed differentiation trajectories. Collectively, we show that the sum of distinct clonal phenotypes results in the multifaceted human T cell response to acute viral infections.
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  • Abbas, Abdul-Karim, 1959, et al. (författare)
  • Persistent LTP without triggered protein synthesis.
  • 2009
  • Ingår i: Neuroscience research. - : Elsevier BV. - 0168-0102. ; 63:1, s. 59-65
  • Tidskriftsartikel (refereegranskat)abstract
    • Protein synthesis is believed to be involved in stabilizing synaptic plasticity. Effects lasting longer than about 2-3h are considered to require synthesis of new proteins, implying a functional separation between early (E) and late (L) components. However, the issue of constitutive vs. new protein synthesis is still unclear, especially in young animals. Here, we examined the effects of two protein synthesis inhibitors, anisomycin and emetine, on long-term-potentiation (LTP) in CA1 area of hippocampal slices from 12- to 20-day-old rats. Either drug was applied from -30 min to +30 min with respect to LTP induction, a time window previously reported to be critical. However, the LTP remained stable under the entire recording period of 4h (anisomycin), or 8h (emetine). Proper preparation of emetine solution was evidenced by the fact that, in separate experiments, prolonged treatment with emetine gradually blocked baseline responses. Although no corresponding effect was observed with anisomycin, the drug was judged to be potent by its ability to inhibit yeast growth. The ability of anisomycin to inhibit protein synthesis was further confirmed by radiolabeling experiments assessing the degree of leucine incorporation. Our data suggest that LTP up to at least 8h is not dependent on triggered protein synthesis but can be attained by utilizing proteins already available at induction time.
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  • Ahadi, Aylin, et al. (författare)
  • Simulation of a Friction Stir Welding Process using FE technique
  • 2006
  • Ingår i: Report TVSM. - 0281-6679.
  • Konferensbidrag (refereegranskat)abstract
    • In this paper a three dimensional FE model of the friction stir welding (FSW) is presented and the FSW process is simulated. The model has been implemented in FE code Abaqus with user subroutines DLOAD, DFLUX and UMASFL. The material data used to describe the welded panels is from an aluminium alloy called AL-2024-T3 and the material is assumed to be isotropic with temperature dependent yield stress and elastic modulus. A nonlinear-coupled thermo-mechanical analysis was performed in order to study the temperature and stress distribution.
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  • Akner, Gunnar, 1953-, et al. (författare)
  • Vi står gärna bakom en utfallsbaserad vård
  • 2017
  • Ingår i: Dagens Samhälle. - 1652-6511.
  • Tidskriftsartikel (populärvet., debatt m.m.)abstract
    • Jörgen Nordenström försöker få det till att vår kritik av värdebaserad vård egentligen handlar om att vi vill ha mer resurser. Han har helt missuppfattat oss, skriver 26 specialistläkare i en replik.
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  • Resultat 1-10 av 195
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