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A folded symplectic form on a manifold is a closed 2-form with the mildest possible de-generacy along a hypersurface. A special class of folded symplectic manifolds are the origami sym-plectic manifolds, studied by Cannas da Silva, Guillemin and Pires, who classified toric origami man-ifolds by combinatorial origami templates. In this paper, we examine the(More)
BACKGROUND Interleukin 22 (IL-22) is emerging as a key cytokine for gut epithelial homeostasis and mucosal repair. Gut disruption is a hallmark of human immunodeficiency virus (HIV) infection. Here, we investigated IL-22 production and gut mucosal integrity in HIV type 1 (HIV-1)-infected individuals receiving long-term antiretroviral therapy (ART). (More)
Naïve FoxP3-expressing regulatory T-cells (Tregs) are essential to control immune responses via continuous replenishment of the activated-Treg pool with thymus-committed suppressor cells. The mechanisms underlying naïve-Treg maintenance throughout life in face of the age-associated thymic involution remain unclear. We found that in adults thymectomized(More)
UNLABELLED A unique HIV-host equilibrium exists in untreated HIV-2-infected individuals. This equilibrium is characterized by low to undetectable levels of viremia throughout the disease course, despite the establishment of disseminated HIV-2 reservoirs at levels comparable to those observed in untreated HIV-1 infection. Although the clinical spectrum is(More)
" Codimension one symplectic foliations and regular Poisson structures. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Dedicated to the memory of Paulette Libermann whose cosymplectic manifolds play a fundamental role in this paper. Abstract. In this short note we give a complete(More)
An origami manifold is a manifold equipped with a closed 2-form which is symplectic except on a hypersurface where it is like the pullback of a symplectic form by a folding map and its kernel fibrates with oriented circle fibers over a compact base. We can move back and forth between origami and symplectic mani-folds using cutting (unfolding) and radial(More)
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