8581
Inhibition of NOS during the second A/R insult results in the generation of an oxidant stress similar to that observed after the first A/R challenge .
 protein: NOS
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: NOS 
Answer:
 protein: NOS