1. Cerylid Biosciences, 576 Swan Street, Richmond, Victoria, 3121, Australia, Aventis Pharmaceuticals, Centre de Recherche de Paris, Etablissement de Romainville 102, Route de Noisy, F-93235 Romainville Cedex, Paris, France, and Royal Botanic Gardens Melbourne, Private Bag 2000, South Yarra, Victoria 3141, Australia