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. Author manuscript; available in PMC: 2011 Jun 17.
Published in final edited form as: Arthropod Struct Dev. 2011 Mar 9;40(3):258–275. doi: 10.1016/j.asd.2011.03.001

Figure 8.

Figure 8

Model summarizing our current view of events leading to the production of new olfactory interneurons in adult crayfish. Neuronal precursor (1st generation) cells reside within a neurogenic niche where they divide symmetrically. Their daughters (2nd generation precursors) migrate along tracts created by the fibers of the niche cells, towards either the LPZ or the MPZ. At least one more division will occur in the LPZ and MPZ before the progeny (3rd and subsequent generations) differentiate into neurons.