15579
Further analysis revealed a G0 / G1 arrest of the phase cell progression and apoptosis , linked to modulation of Bax , Bcl2 , caspase - 9 and poly ( ADP - ribose ) polymerase as well as Reactive Oxygen Species ( ROS ) generation in both colon cancer cells , whereas apoptosis and ROS were not significantly detected in normal human lymphocytes .
 Chemical: poly ( ADP - ribose ); Chemical: Oxygen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: poly ( ADP - ribose ); Chemical: Oxygen