11398
One hour pulse-treatment with 3 microM etoposide caused topoisomerase associated, primary DNA breakage , which was rapidly followed by apoptosis .
 protein: topoisomerase
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: topoisomerase 
Answer:
 protein: topoisomerase