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Conclusion : ATX inhibited oxidative stress induced by MPP + in PC12 cells , via the SP1 / NR1 signaling pathway .
 Chemical: ATX; Chemical: MPP +
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: ATX; Chemical: MPP +