Bioreactors based on human purine nucleoside phosphorylase: development characterization and validation - Moraes, Marcela Cristina de; Ducati, Rodrigo Gay; Santos, Diogenes Santiago; Cardoso, Cármen Lúcia; Cass, Quezia Bezerra (International Symposium on High-Performance Liquid Phase Separations and Related Techniques (HPLC), 2011)