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Taken together , these findings demonstrate that DA is not essential for the development of METH - induced dopaminergic neurotoxicity and suggest that mechanisms independent of DA warrant more intense investigation .
 Chemical: DA; Chemical: METH; Disease: neurotoxicity; Chemical: DA
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:
 Chemical: DA; Chemical: METH; Disease: neurotoxicity; Chemical: DA