Expression of cytotoxic mediators (perforin, granzyme B, FAS, and FAS-I) in renal allograft biopsies - Leitão, Therezinha Gauri; Becker, Luis Eduardo; Oliveira, Ivone Braga de; Siqueira, Flávia Ramos de; Araújo, Maria Regina Teixeira; Romão Junior, João Egidio; Abensur, Hugo; Noronha, Irene de Lourdes (Einstein, 2006)