1. Laboratory for Early Embryogenesis, RIKEN Center for Developmental Biology, Kobe, Hyogo 650-0047, Japan.
2. Vascular Regeneration Research Group, Institute of Biomedical Research and Innovation, Kobe, Hyogo 650-0047, Japan.
3. Functional Genomics Unit, RIKEN Center for Developmental Biology, Kobe, Hyogo 650-0047, Japan.
4. Laboratory for Stem Cell Biology, RIKEN Center for Developmental Biology, Kobe, Hyogo 650-0047, Japan.
5. Laboratory for Systems Biology, RIKEN Center for Developmental Biology, Kobe, Hyogo 650-0047, Japan.