Raíssa Fonseca

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Over the past 20 years, the immune effector mechanisms involved in the control of Trypanosoma cruzi, as well as the receptors participating in parasite recognition by cells of the innate immune system, have been largely described. However, the main questions on the physiopathology of Chagas disease remain unanswered: "Why does the host immune system fail to(More)
The spleen is one of the major immunological sites for maintaining blood homeostasis. Previous studies showed that heterogeneous splenic macrophage populations contribute in complimentary ways to control blood-borne infections and induce effective immune responses. Marginal metallophilic macrophages (MMMΦs) and marginal zone macrophages (MZMΦs) are cells(More)
Dendritic cells (DCs) are phagocytes that are highly specialized for antigen presentation. Heterogeneous populations of macrophages and DCs form a phagocyte network inside the red pulp (RP) of the spleen, which is a major site for the control of blood-borne infections such as malaria. However, the dynamics of splenic DCs during Plasmodium infections are(More)
  • Stattersfield, A J Crosby, +18 authors Possingham
  • 2004
Richness of protected and unprotected cells The richness of each quarter-degree cell touching land (outside Antarctica) was calculated for all species, restricted-range species (occupying #50,000 km) and threatened species. Cells touching protected areas were considered ‘protected’. Protected cells are significantly (P , 0.001) biased towards higher(More)
Although it has been established that effector memory CD4(+) T cells play an important role in the protective immunity against chronic infections, little is known about the exact mechanisms responsible for their functioning and maintenance, as well as their effects on innate immune cells. Here we review recent data on the role of IFN-γ priming as a(More)
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