Simplicio, the protagonist in Joaquim Manoel de Macedo's A luneta magica (1868), claimed to be doubly shortsighted: both physically and morally. For this reason he was taken to the shop of an Armenian who supplied him with ...

T cell-mediated immunity is critical in resistance against Leishmania parasites, and T cell activation requires signals provided by costimulatory molecules. Herein we evaluated the role of costimulatory molecules on cytokine ...