1. Welsh School of Pharmacy, Redwood Building, Cardiff University, King Edward VII Avenue, Cardiff CF10 3XF, United Kingdom; Dipartimento di Biochimica e Biologia Molecolare, Universitá di Ferrara, Via Luigi Borsari 46, 44100 Ferrara, Italy; IBLS, Division of Infection and Immunity, University of Glasgow, Glasgow G12 8QQ, United Kingdom; and Swiss Tropical Institute, Socinstrasse 57, CH-4002 Basel, Switzerland