23677
Basal synaptic transmission , short - term plasticity , and synaptic fatigue during LTP induction were not significantly altered by treatment with k252a or TrkB - Fc , or by chronic BDNF reduction in BDNF + / - mice .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None