14998
Importantly , intraplantar injection of Complete Freund ' s Adjuvant ( CFA ) naturally activated spinal PTPs to initiate Src signaling , because PTPs inhibition significantly repressed Src activity , reduced Src phosphorylation of NR2B , decreased NR2B synaptic accumulation and eventually ameliorated inflammatory pain .
 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