12782
Acute exposure to tBHQ resulted in transient reduction in heart rate in NBH and SC F ( 1 ) embryos .
 Chemical: tBHQ
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: tBHQ 
Answer:
 Chemical: tBHQ