Adult neurogenesis in crayfish: Identity and regulation of neural progenitors produced by the immune system.

Adult-born neurons are incorporated into brain circuits in the crayfish , as in many vertebrate and invertebrate species. Adult neurogenesis depends on several conserved features, including the presence of neurogenic niches housing progenitor cells and the expansion, migration, and differentiation of their daughters, the neural precursor cells. However, in contrast to mammalian species, the progenitors initiating the neurogenic lineage in do not undergo long-term self-renewal.