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The significantly decreased levels of p - PI3K and p - AKT expression were observed in SGC - 7901 cells after beta - ionone treatments in a time - and dose - dependent manner ( P < 0 . 01 ) .
 Chemical: beta - ionone
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: beta - ionone