1. Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 819-0395, Japan;
2. Department of Advanced Information Technology, Kyushu University, Fukuoka 819-0395, Japan;
3. Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan;
4. AMED-PRIME, Japan Agency for Medical Research and Development, Tokyo 100-0004, Japan