Ntn-hydrolases unveiled : structural investigation into isopenicillin N acyltransferase and the quorum-quenching acylase PvdQ / Marcel BokhoveNtn-hydrolases unveiled : structural investigation into isopenicillin N acyltransferase and the quorum-quenching acylase PvdQ / Marcel BokhoveEvaluation of D-penicillamine in scleroderma / door Leendert van WijkEvaluation of D-penicillamine in scleroderma / door Leendert van WijkAn enzymological study on the mechanism of action of the anti-arthritic drug D-penicillamine and myeloperoxidase / door Roelck Anneke Cuperus