Materials Mouse monoclonal anti-human PSMA antibody (PSM-F2) and mouse immunoglobulin G kappa (IgGk)-binding protein (BP) conjugated to horseradish peroxidase (m-IgGκ-BP-HRP) were purchased from Santa Cruz Biotechnology (Dallas, TX, USA). Alexa Fluor®488 anti-human PSMA antibody and Alexa...