10568
In a previous study , we have shown that 2 - amino - 1 - methyl - 6 - phenylimidazo [ 4 , 5 - b ] pyridine ( PhIP ) , the most abundantly formed HCA in the above - mentioned food items , is mainly absorbed in the small intestine ( i . e . proximal jejunum ) of the rat .
 Chemical: 2 - amino - 1 - methyl - 6 - phenylimidazo [ 4 , 5 - b ] pyridine; Chemical: PhIP; Chemical: HCA
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: 2 - amino - 1 - methyl - 6 - phenylimidazo [ 4 , 5 - b ] pyridine; Chemical: PhIP; Chemical: HCA