7202
The organochlorine contamination at FU20 and FU50 was associated with variable changes in the MRCs and inhibition of Na ( + ) / K ( + ) - ATPase ( NKA ) activity , especially in P . maculatus .
 Chemical: organochlorine; Chemical: Na ( + ); Chemical: K ( + )
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: organochlorine; Chemical: Na ( + ); Chemical: K ( + )