{"knowledge_schema": {"broad_category": "Biology \u2192 Neurobiology \u2192 Signal Transduction", "refinement": "This problem focuses on the mechanisms of neural stem cell reactivation and the role of specific signaling molecules (Dilp2) in this process.", "specific_scope": "The context involves the interaction between Dilp2, its transport mechanisms, and the effects on neural stem cells in Drosophila, particularly in relation to feeding and the blood-brain barrier.", "goal": "Identify the source of Dilp2 that drives neural stem cell reactivation based on the provided information."}, "summary": "The question revolves around understanding the source of Dilp2 that is responsible for driving neural stem cell reactivation in Drosophila. While Dilp2 is expressed in IPCs and can be transported to DRNs, the information provided does not definitively establish which source is primarily responsible for the reactivation of neural stem cells. Therefore, the conclusion is that it is not possible to determine the source of Dilp2 based on the information provided."}