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           **Level**: advanced(%%)  **Type**: user documentation | 
        
              
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          +=== [[Using the CellBuilder – Introduction>>https://neuron.yale.edu/neuron/static/docs/cbtut/main.html||rel=" noopener noreferrer" target="_blank"]] === | 
        
              
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          +**Level**: advanced(%%)  **Type**: interactive tutorial | 
        
              
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          +The following tutorials show how to use the CellBuilder, a powerful and convenient tool for constructing and managing models of individual neurons. It breaks the job of model specification into a sequence of tasks: | 
        
              
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          +1. Setting up model topology (branching pattern). | 
        
              
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          +2. Grouping sections with shared properties into subsets. | 
        
              
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          +3. Assigning geometric properties (length, diameter) to subsets or individual sections, and specifying a discretization strategy (i.e. how to set nseg). | 
        
              
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          +4. Assigning biophysical properties (Ra, cm, ion channels, buffers, pumps, etc.) to subsets or individual sections. | 
        
              
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