elegansNet - Resources in biochemical, molecular, cellular, system, and organism biology, including over 25,000 indexed links, accumulated since 2000, from topic menus or from search interface. The Bio-Web - Directory of web bio-resources: tools for DNA and protein sequence analysis, bio-journals, companies catalogues, web bio-directories, research institutions and other sites of biological interest. Research Tools - Collection of very useful links to databases and tools for molecular biochemistry. Microbiology Gateway - A listing of online resources in microbiology and molecular biology. Molecular Diversity - Literature, scientists, and companies in the fields of combinatorial chemistry, solid phase synthesis, library production and screening, automation and robotics, with journal link, maintained by CSPS, San Diego, CA. Biochemist e-volution - News, events, announcements, book reviews, marketplace, edited by the Biochemical Society in the UK.