16224
Osteoclast maturation and function primarily depend on receptor activator of NF - kappa B ligand ( RANKL ) - mediated induction of nuclear factor of activated T cells c1 ( NFATc1 ) , which is further activated via increased intracellular calcium ( [ Ca ( 2 + ) ] ( i ) ) oscillation .
 Chemical: calcium; 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: calcium; Chemical: Ca ( 2 + )