16622
Anti - inflammatory activity of Saccharina japonica and its active components was evaluated via in vitro inhibitory activities against lipopolysaccharide ( LPS ) - induced nitric oxide ( NO ) production , inducible nitric oxide synthase ( iNOS ) , and cyclooxygenase - 2 ( COX - 2 ) expression in RAW 264 . 7 murine macrophage cells .
 Chemical: nitric oxide; Chemical: NO; 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, NO, nitric oxide 
Answer:
 Chemical: nitric oxide; Chemical: NO; Chemical: nitric oxide