title: Amitriptyline does not block the action of ATP at human P2X4 receptor.
authors.affiliation: Faculty of Medical and Human Sciences, Michael Smith Building, University of Manchester, Manchester, UK. joan.sim@manchester.ac.uk
authors.forename: J A
authors.initials: JA
authors.lastname: Sim
authors.forename: R A
authors.initials: RA
authors.lastname: North