1. PhytoQuest Limited, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, U.K.
2. Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
3. Integrated BioSciences, School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, U.K.
4. Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K.