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Arsenic trioxide induces cardiac fibroblast apoptosis in vitro and in vivo by up - regulating TGF - beta 1 expression .
 Chemical: Arsenic trioxide
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: Arsenic trioxide