2272
Similarly , the total protein abundance of the Na - K - 2Cl cotransporter ( NKCC2 ) in the medulla but not in the cortex of the + / + mice was significantly reduced by lithium treatment .
 Chemical: Na; Chemical: K; Chemical: 2Cl; Chemical: lithium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: Na; Chemical: K; Chemical: 2Cl; Chemical: lithium