3301
These findings provide evidences that HER induces HepG2 apoptosis in a ROS - mediated mitochondria - dependent manner that correlate with the inactivation of the PI3K / Akt pathway .
 HER
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 HER