Affiliation: | (1) Animal Genome Research Group, National Institute of Animal Industry, Norindanchi P.O. Box 5, Tsukuba, Ibaraki 305, Japan, JP;(2) The Second Research Division, STAFF Institute, 446-1 Ippaizuka, Kamiyokoba, Tsukuba, Ibaraki 305, Japan, JP;(3) Department of Clinical Research, Ichihara Hospital, School of Medicine, Teikyo University, 3426-3 Anesaki, Ichihara, Chiba 299-01, Japan, JP |