Editing Adult neurogenesis (section)

===Planarian===
[[Planarian]] are one of the earliest [[model organism]]s used to study [[Regeneration (biology)|regeneration]] with [[Peter Simon Pallas|Pallas]] as the forefather of planarian studies. Planarian are a classical invertebrate model that in recent decades have been used to examine neurogenesis. The central nervous system of a planarian is simple, though fully formed with two lobes located in the head and two [[ventral nerve cord]]s. This model reproduces asexually producing a complete and fully functioning nervous system after division allowing for consistent examination of neurogenesis.