2989
Intracellular reactive oxygen species ( ROS ) generation and lipid peroxidation were observed after treatment with AMD and were further elevated by TNF cotreatment .
 Chemical: oxygen; Chemical: AMD
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: oxygen, AMD 
Answer:
 Chemical: oxygen; Chemical: AMD