15624
Nuclear factor of activated T - cells ( NFATc ) is a transcriptional factor regulated by the Ca ( 2 + ) - dependent protein phosphatase calcineurin .
 Ca ( 2 + )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Ca ( 2 + )