20057
This study was undertaken to examine the effects of SFN on behavioral changes and dopaminergic neurotoxicity in mice exposed to 6 - hydroxydopamine ( 6 - OHDA ) .
 Chemical: SFN; Chemical: 6 - hydroxydopamine; Chemical: 6 - OHDA
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: SFN; Chemical: 6 - hydroxydopamine; Chemical: 6 - OHDA