<s>[INST] Pementia, a rare and poorly understood form of dementia associated with aging, breaks down a neuron's protective layer, leaving it exposed and vulnerable to attack. Inspired by studies of a species of jellyfish, but not the life cycle jellyfish go through, a new approach to understanding and potentially treating Pementia involves augmenting neural stem cells with an artificial myelin sheath. In 2-3 paragraphs, can you tell me about the difference between crustacean neural stem cells and human neural stem cells?[/INST]