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. Author manuscript; available in PMC: 2019 Jun 5.
Published in final edited form as: Results Probl Cell Differ. 2018;65:515–525. doi: 10.1007/978-3-319-92486-1_22

Figure 2.

Figure 2

Sea urchin (S. purpuratus) pluteus larvae showing the reddish pigment cells embedded in the ectoderm. Pigment cells have a stellar shape, and they can extend and re-tract their pseudopods and move within the ectoderm.