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. 2013 Mar 1;140(5):951–957. doi: 10.1242/dev.080499

Fig. 1.

Fig. 1.

Neoblasts are the source of new cells in planarian regeneration. Neoblasts are a population of all adult dividing cells in planarians and collectively produce all adult cell types. Neoblasts are required, as a population, for regeneration and for the replacement of aged cells that occurs during natural tissue turnover.