Trunk exoskeleton in teleosts is mesodermal in origin

  title={Trunk exoskeleton in teleosts is mesodermal in origin},
  author={Atsuko Shimada and Toru Kawanishi and Takuya Kaneko and Hiroki Yoshihara and Tohru Yano and Keiji Inohaya and Masato Kinoshita and Yasuhiro Kamei and Koji Tamura and Hiroyuki Takeda},
  booktitle={Nature communications},
The vertebrate mineralized skeleton is known to have first emerged as an exoskeleton that extensively covered the fossil jawless fish. The evolutionary origin of this exoskeleton has long been attributed to the emergence of the neural crest, but experimental evaluation for this is still poor. Here we determine the embryonic origin of scales and fin rays of medaka (teleost trunk exoskeletons) by applying long-term cell labelling methods, and demonstrate that both tissues are mesodermal in origin… CONTINUE READING
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