Affiliation: | a Okazaki Institute for Integrative Biosciences, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan b Department of Basic Biology, Graduate University for Advanced Studies (SOKENDAI), Japan c Department of Genetics, Graduate University for Advanced Studies (SOKENDAI), Japan d Division of Mammalian Development, National Institute of Genetics, Yata 1111, Mishima 411-8540, Japan e Theoretical Biology Laboratory, RIKEN Advanced Science Institute, Wako 351-0198, Japan |