  In situ hybridisation gene expression information helps biologists identify
where a gene is expressed. However, the databases that republish the
experimental information are often both incomplete and inconsistent. This paper
examines a system, Argudas, designed to help tackle these issues. Argudas is an
evolution of an existing system, and so that system is reviewed as a means of
both explaining and justifying the behaviour of Argudas. Throughout the
discussion of Argudas a number of issues will be raised including the
appropriateness of argumentation in biology and the challenges faced when
integrating apparently similar online biological databases.
