6872
When neurons were challenged with a large rapid increase in [ Na ( + ) ] ( i ) , similar to what could be expected following suprathreshold neuronal activity , selective inhibition of alpha 3 almost completely abolished the capacity to restore [ Na ( + ) ] ( i ) in soma and dendrite .
 Na ( + ), Na ( + )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Na ( + ), Na ( + )