Bioorganic & Medicinal Chemistry provides an international forum for the publication of full original research papers and critical reviews on molecular interactions in key biological targets such as receptors, channels, enzymes, nucleotides, lipids and saccharides. The aim of the journal is to promote a better understanding at the molecular level of life processes, and living organisms, as well as the interaction of these with chemical agents. A special feature will be that colour illustrations will be reproduced at no charge to the author, provided that the Editor agrees that colour is essential to the information content of the illustration in question. From 1996, Bioorganic & Medicinal Chemistry is included in Tetrahedron Alert, the first phase of the Tetrahedron Information System. Tetrahedron Alert is the new electronic information service accessible via the Internet, and is a pre-publication service which provides the contents lists and graphical abstracts of current and forthcoming issues for all 5 of the Tetrahedron journals. Updated weekly, Tetrahedron Alert offers: the option to view the contents list as graphical abstracts; the ability to search a single journal or across all 5 journals; search options using user-friendly query forms; hypertext links to facilitate navigation; the facility to print to your own printer. At any given time, Tetrahedron Alert contains approximately 3-4 months worth of current issues and accepted papers. A sampler which demonstrates the content and functionality of Tetrahedron Alert can be accessed via the Tetrahedron Information System Home Page at http://www.elsevier.nl/locate/tis.