20153
These data suggest that crotonaldehyde is capable of directly stimulating the production of IL - 8 in both macrophages and airway epithelial cells .
 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