56397
The experiment was performed by lowering the external Na concentration , which lowers ( makes more negative ) the Na equilibrium potential and produces a negative shift in reversal potential .
 person: Na
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Na 
Answer:
 person: Na