20145
Crotonaldehyde - exposed macrophages induce IL - 8 release from airway epithelial cells through NF - kappa B and AP - 1 pathways .
 Chemical: Crotonaldehyde
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: Crotonaldehyde