4768
At 1mM HEA , Na ( + ) imbalance became progressively more severe in trout and carp due to a stimulation of unidirectional Na ( + ) efflux ( J ( out ) ( Na ) ) without a concomitant increase in unidirectional Na ( + ) influx ( J ( in ) ( Na ) ) .
 Chemical: Na ( + ); Chemical: Na ( + ); Chemical: Na; Chemical: Na ( + ); Chemical: Na
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Na ( + ); Chemical: Na ( + ); Chemical: Na; Chemical: Na ( + ); Chemical: Na