14956
Furthermore , inhibition of HO - 1 with zinc protoporphyrin IX ( ZNPP ) significantly reversed the protective effect of Paeoniflorin against radiation - induced damage in EA . hy926 cells .
 Chemical: zinc protoporphyrin IX; Chemical: ZNPP; Chemical: Paeoniflorin
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: zinc protoporphyrin IX; Chemical: ZNPP; Chemical: Paeoniflorin