About the Authors
- Ari Ueno, Goh Matsuda, Hirokata Fukushima, Kazuo Hiraki, Toshikazu Hasegawa
- The University of Tokyo, Tokyo, Japan
- Satoshi Hirata, Kohki Fuwa, Keiko Sugama, Kiyo Kusunoki
- Great Ape Research Institute, Hayashibara Biochemical Laboratories, Tamano, Okayama, Japan
- Masaki Tomonaga
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MT AU GM KH TH SH. Performed the experiments: KF KS KK SH. Analyzed the data: AU HF. Contributed reagents/materials/analysis tools: GM. Wrote the paper: AU GM HF.