10740
In animals treated with DEN as neonates , presence of liver fibrosis led to more than doubling ( to 100 % ) of the liver tumor incidence as early as 5 months of age .
 Chemical: DEN
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: DEN 
Answer:
 Chemical: DEN