24205
In recent years , a number of studies have shown that oxidative stress could cause cellular apoptosis via both the mitochondria - dependent and mitochondria - independent pathways .
 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