8067
The putative pre - and postsynaptic components of neonatal LTP were distinguished in their downstream signaling requirements , PKC activity being selectively needed for the decrease in facilitation but not for synaptic potentiation per se .
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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