1. Easter Bush Veterinary Centre, University of Edinburgh, Roslin, Midlothian, EH25 9RG, Scotland, U.K.; The Edinburgh Cell Wall Group, University of Edinburgh, Daniel Rutherford Building, King's Buildings, Edinburgh EH9 3JH, Scotland, U.K.; Craiglaw Laboratory, Fruid, Tweedsmiur, Biggar ML12 6QR, Scotland, U.K.; Cellular Metabolism and Enzymology Group, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, England, U.K.; and Faculty of Pharmaceutical Sciences, University of Sao...