[Perforin and granzyme B expression in liver allograft rejection].

Objective: To investigate the expression of perforin and granzyme B in rejection response following liver transplantation, and evaluate their roles to be used as predictive markers of rejection.

Methods: The expression of perforin and granzyme B in liver biopsies obtained from liver allograft recipients was determined by immunohistochemistry. Biopsies were classified into two groups-no evidence of rejection and rejection-according to Histopathologic criteria.