For example, inflammatory signals like interleukin 17A serum levels in a murine model of posttraumatic stress disorder modulate DCX and Ki67+cells in the DG (Willinger and Turgeman 2022) or extracellular and adhesion molecules (reviewed in Morante-Redolat and Porlan, 2019) can promote alertness and activation of NSCs in response to indicators that affect the entire organism. The gene discussed is IL17A; the disease is post-traumatic stress disorder.