10164
A549 cells , containing a stably transfected Interleukin - 8 ( IL - 8 ) Luciferase promoter construct , were cultured in the presence of the proinflammatory cytokine tumor necrosis factor - alpha ( TNF - alpha ) and polystyrene particles for 4 . 5h .
 Chemical: polystyrene
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: polystyrene