10039
We have employed alkaline comet assay , gamma H2AX foci formation and DNA ladder assay to detected DNA damage and apoptosis of Drosophila S2 , HeLa and HEK293 cells .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None