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— Distributed Peer-to-Peer and Grid infrastructure require distributed access control mechanisms. These mechanisms can be implemented in distributed trust management infrastruc-tures and usually require reasoning on more than one peer, as soon as authority is delegated or requests involve several authorities. Building on previous work of the authors which(More)
  • Marta Barreto, Ricardo C Ferreira, Lara Lourenço, Maria F Moraes-Fontes, Eugénia Santos, Miguel Alves +9 others
  • 2009
BACKGROUND CD4+CD25+ regulatory T cells play an essential role in maintaining immune homeostasis and preventing autoimmunity. Therefore, defects in Treg development, maintenance or function have been associated with several human autoimmune diseases including Systemic Lupus Erythematosus (SLE), a systemic autoimmune disease characterized by loss of(More)
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