2591
In addition , the disrupted prepulse inhibition induced by d - amphetamine or phencyclidine was restored by 5 - HT6 receptor antagonist in an animal study using rats .
 Chemical: d - amphetamine; Chemical: phencyclidine; Chemical: 5 - HT6
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: d - amphetamine; Chemical: phencyclidine; Chemical: 5 - HT6