1256
To determine whether there was a temporal relationship between VPA - associated oxidative stress and hepatotoxicity , adult male Sprague - Dawley rats were treated ip with VPA ( 500 mg / kg ) or 0 . 9 % saline ( vehicle ) once daily for 2 , 4 , 7 , 10 , or 14 days .
 Chemical: VPA; Disease: hepatotoxicity; Chemical: VPA
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: VPA; Disease: hepatotoxicity; Chemical: VPA