Augmentation of VAMP-catalytic activity of botulinum neurotoxin serotype B does not result in increased potency in physiological systems. oleh Mark Elliott, Jacquie Maignel, Sai Man Liu, Christine Favre-Guilmard, Imran Mir, Paul Farrow, Fraser Hornby, Sandra Marlin, Shilpa Palan, Matthew Beard, Johannes Krupp