Figure 6.

Schematic of patterning in jellyfish. (A) After dissection of the Clytia umbrella, different sizes of fragments undergo re-circularization and re-establish radial symmetry. Upon completion of umbrella remodeling, the manubrium can regenerate, even if the original manubrium is absent. (B) After amputation of Aurelia ephyra, the fragments repair their radial symmetry without regenerating lost arms, a phenomenon called “symmetrization”. Proper symmetrization of ephyra results in normal subsequent development into adult medusa if the oral part remains intact.