16733
After 30min of treatment , antofine induced a rapid increase in the intracellular Ca ( 2 + ) concentration and activation of protein kinase C ( PKC ) alpha / beta II , which was maintained for at least 6h .
 Chemical: Ca ( 2 + )
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: Ca ( 2 + )