12001
The results showed that ( 1 ) 15mg / kg body weight PhIP induced obvious histopathological changes in gastric mucosa ; ( 2 ) PhIP ( 10 and / or 15mg / kg ) significantly decreased superoxide dismutase ( SOD ) and glutathioneperoxidase ( GPx ) activities , while increased catalase ( CAT ) activity compared with the control .
 Chemical: PhIP; Chemical: PhIP; Chemical: superoxide
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: PhIP; Chemical: PhIP; Chemical: superoxide