The Origins of the Central Nervous System
Understanding the developmental origins of the nervous sytem is important for two reasons. First, it is intellectually interesting as an example of the assembly of a multicellular system. Second, this knowledge will permit us to control the assembly and disassembly of this system in health and in disease. Of course the brain is an extraordinarily complex device and there are many steps in the assembly process. Following the advice given to Alice in Wonderland, we can begin at the beginning and ask what cells give rise to the nervous system.
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