Wellcome Trust/Cancer Research UK Institute of Cancer and Developmental Biology and Department of Biochemistry, University of Cambridge, Cambridge, UK. rick@welc.cam.ac.uk
Comprehensive microarrays covering large numbers of the predicted expressed transcripts for some invertebrates and vertebrates have been available for some time. Despite predictions that this technology will transform biology, to date there have been few published studies using microarrays to generate novel insights in developmental biology.