3381
CONCLUSIONS : The plausibility of an effect of ambient concentrations of these pollutants on Parkinson ' s disease risk is supported by experimental data demonstrating damage to dopaminergic neurons at relevant concentrations .
 Disease: Parkinson ' s disease
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: Parkinson ' s disease