3639
Halogenated anesthetics form liver adducts and antigens that cross - react with halothane - induced antibodies .
 Chemical: halothane
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: halothane 
Answer:
 Chemical: halothane