4447
5 , 7 - DCKA injected bilaterally in a dose of 4 . 5 microg / 0 . 5 microl into the intermediate - caudal region of the striatum of rats not pretreated with haloperidol had no effect on the muscle tone .
 Chemical: 5 , 7 - DCKA; Chemical: haloperidol
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: 5 , 7 - DCKA; Chemical: haloperidol