Screening of potential ligands using an immobilized enzyme reactor based on purine nucleoside phosphorylase from S. mansoni - Moraes, Marcela Cristina de; Andricopulo, Adriano Defini; Oliva, Glaucius; Cardoso, Cármen Lúcia; Cass, Quezia Bezerra (International Symposium on Drug Analysis, 2010)