15315
Therefore , the inhibition of this pathway may be implicated in the degeneration of neurons in Parkinson ' s disease ( PD ) , Alzheimer ' s disease ( AD ) , and other neurological disorders .
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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