12950
In the present study , we exposed human bronchial epithelial cells ( BEAS - 2B ) to AgNO3 and investigated uptake and intracellular distribution of Ag , expression of metallothionein ( MT ) , generation of reactive oxygen species ( ROS ) , and changes in mitochondrial respiration .
 Chemical: AgNO3; Chemical: Ag; Chemical: oxygen
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: AgNO3; Chemical: Ag; Chemical: oxygen