11206
These observations provide further evidence to suggest a role for intracellular oxidant generation as a regulatory mechanism during cell cycle entry , and establish a link between oxidative signalling and other aspects of the intracellular signalling network that is activated in response to mitogenic stimulation .
 None
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:  
Answer:
 None