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When PD ( 10 and 20 micro m ) was combined with EGCG ( 10 , 20 , and 30 micro m ) , significantly enhanced antiproliferative effects were observed in both cell lines .
 Chemical: EGCG
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: EGCG