11956
Taken together , the data support the concept that Topo II alpha inhibition by ( - ) - xanthatin is a trigger that stimulates expression of DNA damage - inducible GADD45 gamma mRNA and that concomitantly produced ROS act downstream to further enhance the GADD45 gamma mRNA / GADD45 gamma protein induction process , resulting in breast cancer cell death .
 Chemical: ( - ) - xanthatin
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: ( - ) - xanthatin