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Ursolic acid significantly exerted cytotoxicity , increased the sub - G1 population and the number of ethidium homodimer and terminal deoxynucleotidyl transferase ( TdT ) mediated dUTP nick end labeling positive cells in HepG2 cells .
 Chemical: Ursolic acid; Chemical: ethidium; Chemical: dUTP
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: Ursolic acid; Chemical: ethidium; Chemical: dUTP