Origin of the gonad in the juvenile of a solitary ascidian, Ciona intestinalis.

@article{Yamamoto1999OriginOT,
  title={Origin of the gonad in the juvenile of a solitary ascidian, Ciona intestinalis.},
  author={Masamichi Yamamoto and Toshiaki Okada},
  journal={Development, growth & differentiation},
  year={1999},
  volume={41 1},
  pages={73-9}
}
In the just-metamorphosed juveniles of Ciona intestinalis, a round mass of tissue debris derived from the resorbed tadpole tail is situated in the broad space enclosed by the peritoneal membrane and the epidermis around the ventral side of the esophagus. In living juveni es, the origin of the gonad rudiment was traced back to the mass of tissue debris. Electron microscopically, the round mass was a clump of irregular-shaped phagocytotic cells engulfing degenerated cell fragments. On the surface… CONTINUE READING
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