2402
These novel findings suggest that DCS and VPA might enhance exposure - based cognitive therapy for anxiety disorders and PTSD by reducing the vulnerability to reinstatement and preventing relapses of fear - conditioned responses , and provide evidence for a peculiarity of the sleep - dependent off - line learning process for conditioned fear extinction .
 Chemical: DCS; Chemical: VPA
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: DCS; Chemical: VPA