17788
Assessment of the abuse liability of ABT - 288 , a novel histamine H3 receptor antagonist .
 Chemical: ABT - 288; Chemical: histamine
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: ABT - 288; Chemical: histamine