Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.|Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.|Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.|Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.|Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.