1220
ATM caused a significant decrease of the tonic activity of LC single - units , although leaving intact the sensory - evoked excitatory component of LC phasic response .
 Chemical: ATM
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: ATM 
Answer:
 Chemical: ATM