20751
We demonstrate that generation of this fragment is a requirement for p75 ( NTR ) to facilitate TrkA signaling in neurons and propose that the juxtamembrane region of p75 ( ICD ) acts to cause a conformational change within the extracellular domain of TrkA .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None