A graphic summarizing development of HVO’s across three sea star species. (IMAGE)

Marine Biological Laboratory

A graphic summarizing development of HVO’s across three sea star species.

Caption

A graphic summarizing development of HVO’s across three sea star species. In both A. forbesi and P. miniata the tubes form similarly. The main difference is that in A. forbesi tubes remain separate on either side of the esophagus, while in P. miniata the tubes merge over the mouth. HVO formation in A. aranciacus differs as the tubes reach the sides of the stomach before elongating toward the head. Image credit: Margherita Perillo

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Image credit: Margherita Perillo

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