4 research outputs found
Simulating Dirac fermions with Abelian and non-Abelian gauge fields in optical lattices
In this work we present an optical lattice setup to realize a full Dirac
Hamiltonian in 2+1 dimensions. We show how all possible external potentials
coupled to the Dirac field can arise from perturbations of the existing
couplings of the honeycomb lattice model, without the need of additional laser
fields. This greatly simplifies the proposed implementations, requiring only
spatial modulations of the intensity of the laser beams. We finally suggest
several experiments to observe the properties of the Dirac field in the setup
Back to base pairs: what is the genetic risk for red bloodcell alloimmunization?
Red blood cell (RBC) alloimmunization is a serious complication of blood transfusions, challenging selection of compatible units for future transfusions. Genetic characteristics may be associated with the risk of RBC alloimmunization and may therefore serve to identify high-risk patients. The aim of this systematic review was to summarize the available evidence on genetic risk factors for RBC alloimmunization. Electronic databases were searched up to April 2020 for studies (Search terms included transfusion, alloimmunization and genetic). A total of 2581 alloimmunized cases and 26,558 controls were derived from 24 studies. The alleles that were most frequently studied and that demonstrated significant associations in a meta-analysis with alloimmunization to the Duffya antigen were HLA-DRB1*04 (Odds Ratio 7.80 (95%CI 4.57-13.33)), HLA-DRB1*15 (OR 3.76 (95%CI 2.14-6.59)), and HLA-DRB1*03 (OR 0.12 (95%CI 0.05-0.29)). Furthermore, significant associations with anti-K formation was found for the alleles HLA-DRB1*10 (OR 2.64 (95%CI 1.41-4.95)), HLA*DRB1*11 (OR 2.11, (95% CI 1.34-3.32)), and HLA-DRB1*13 (OR 1.71 (95%CI 1.26-2.33)). Overall, the available evidence was of moderate to low quality, hampering interpretation of reported results. There is an urgent need for high quality evidence on genetic risk factors for RBC alloimmunization
Katayama Syndrome Without Schistosoma mansoni Eggs
Host-parasite interactio