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Dorsal root ganglion ( DRG ) neurons are affected by platinum - induced neurotoxicity and neurodegenerative processes associated with disturbed copper homeostasis and transport .
 Chemical: platinum; Chemical: copper
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: platinum; Chemical: copper