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           **Level**: advanced(%%)  **Type**: interactive tutorial | 
        
              
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           In this tutorial you will learn how to implement cell signalling function in the reaction-diffusion system by characterising your problems by the answers to three questions: (1) Where do the dynamics occur, (2) Who are the actors, and (3) How do they interact? | 
        
              
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          -=== [[Ball and Stick model part 3>>https://neuron.yale.edu/neuron/docs/ball-and-stick-model-part-3||rel=" noopener noreferrer" target="_blank"]] === | 
        
              
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          -**Level**: advanced(%%)  **Type**: user documentation | 
        
              
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