http://www.reactome.org Reactome is a open, on-line knowledgebase of biological processes. en-us http://www.reactome.org New topics released in Version 21 of the knowledgebase include the Rho GTPase cycle, Wnt regulation of beta-catenin, gap junction turnover, pathways for steroid hormome biosynthesis and metabolism of bile acids and bile salts, and snRNP assembly. An outline of the entire influenza virus infection cycle has been completed. Thu, 16 Nov 2006, 12:00:00 GMT