16296
Prolactin regulates transcription of the ion uptake Na + / Cl - cotransporter ( ncc ) gene in zebrafish gill .
 Chemical: Na +; Chemical: Cl -
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: Cl -