Division of Genetics and Mutagenesis National Institute of Health Sciences 1-18-1 Kamiyoga Setagaya-ku Tokyo 158-8501 Japan.;
AGENE Research Institute 200 Kajiwara Kamakura. Kanagawa 247-0063 Japan.;
Olympus Chromosome Research Center. 2-3 Kuboyama-cho Hachioji-shi;