d-Amino acid oxidase controls motoneuron degeneration through d-serine Jumpei Sasabe, Yurika Miyoshi, Masataka Suzuki, Masashi Mita, Ryuichi Konno, Masaaki Matsuoka, Kenji Hamase, and Sadakazu Aiso aDepartment of Anatomy, Keio University School of Medicine, Tokyo 160-8582, Japan;bGraduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan;cInnovative Science Research and