2080
The histological features were improved in hippocampus of rats treated with ZnSO ( 4 ) + BCNU compared to only BCNU - treated animals .
 Chemical: ZnSO ( 4 ); Chemical: BCNU; Chemical: BCNU
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: ZnSO ( 4 ); Chemical: BCNU; Chemical: BCNU