The evolutionary origin of the vertebrate body plan: the problem of head segmentation

Takayuki Onai1, Naoki Irie, Shigeru Kuratani

  • 1Laboratory for Evolutionary Morphology, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan; email: tonai@cdb.riken.jp , irie@biol.s.u-tokyo.ac.jp , saizo@cdb.riken.jp.

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