3606
MuSK forms with its co - receptor LRP4 , a member of the Low - density Related Protein family , a receptor complex for agrin and Wnts , representing the core system from which the postsynaptic domain is built , the growth cone attracted and the presynaptic element instructed for some aspects of its differentiation .
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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