Fas-FasL interaction modulates nitric oxide production in Trypanosoma cruzi-infected mice - Martins, Gislâine Aparecida; Petkova, Stefka B.; Machado, Fabiana Simão; Kitsis, Richard N.; Weiss, Louis M.; Wittner, Murray; Tanowitz, Herbert B.; Silva, João Santana da (Immunology, 2001)