24341
A set of cell functions and corresponding end - points were monitored such as cytotoxicity , real - time cell impedance , genotoxicity , oxidative stress , apoptosis and PXR nuclear receptor transactivation .
 None
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