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