16712
On the other hand , pre - test injection of all drugs reversed the HE - induced amnesia 24 days after BDL , while having no effect on exploratory behaviors .
 None
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:  
Answer:
 None