1598
Exposure to Mn resulted in a significant elevation of the plasma marker enzyme activities and bilirubin level related to liver dysfunction of reactive oxygen species ( ROS ) production and hepatic oxidative stress indices .
 Chemical: Mn; Chemical: bilirubin; 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: Mn; Chemical: bilirubin; Chemical: oxygen