1635
Our results demonstrate that high levels of AA and PPAR alpha expression in human breast cancer tissues are associated with ER - overexpressed breast cancer cell proliferation , which is involved in activating PPAR alpha , stimulating cyclin E expression , and promoting faster G1 / S transition .
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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:
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