17009
MDSCs have unique ways of abrogatingan immune response in addition to those utilised by other immune - suppressive cell types , for example via the induction of arginase - 1 and consequent upregulation in reactive oxygen species ( ROS ) production .
 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: oxygen