10145
Thus , the genotoxicity of nanoparticles , that could be used as non - viral drug carriers , should be evaluated based on the intracellular level of ROS generation and DNA damage even in absence of a significant cell death .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None