5467
Specifically , by using human DLD1 colon epithelial / carcinoma cells we demonstrate that , upon IFN alpha , IL - 22 converts into a cytokine robustly activating STAT1 and its downstream pro - inflammatory targets CXCL9 , CXCL10 , and inducible nitric oxide synthase ( iNOS ) .
 Chemical: nitric oxide
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: nitric oxide 
Answer:
 Chemical: nitric oxide