12185
The toxicity of manufactured silver nanoparticles ( AgNPs ) has been widely studied , but the influence of AgNPs on the major ions ( such as sodium [ Na ] and calcium [ Ca ] ) regulations are unknown .
 Chemical: silver; Chemical: sodium; Chemical: Na; Chemical: calcium; Chemical: Ca
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: silver; Chemical: sodium; Chemical: Na; Chemical: calcium; Chemical: Ca