3444
We observed similar effects of Ag NPs on inflammatory mediator expression in vitro and in vivo with increase of interleukin - 8 ( IL - 8 ) / macrophage inflammatory protein 2 , IL - 1RI , and tumor necrosis factor - alpha expression in both models and increased IL - 8 protein release in vitro .
 Chemical: Ag
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: Ag