Our international collaborative effort has been providing the useful genomic resources of the rat. It is also a fruit of the successful collaboration between industrial and academic research groups. Otsuka GEN Research Institute, Otsuka Pharmaceutical Co. Ltd (JPN), Department of Genetics, University of Cambridge (UK), Wellcome Trust Centre for Human Genetics, University of Oxford (UK), Research Genetics Inc (USA), and Institute of Medical Science, University of Tokyo (JPN) have been working together to accelerate the genomic researches of the rat. We are proud to provide the first genomic resources to the research community of rat genome (see Nature Genetics, May 1999 issue).