16230
Treatment with hemin , a HO - 1 inducer , and with [ Ru ( CO ) 3Cl2 ] 2 , a CO donor , decreased LPS - stimulated iNOS induction and NO production .
 Chemical: hemin; Chemical: [ Ru ( CO ) 3Cl2 ] 2; Chemical: CO; Chemical: NO
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: hemin; Chemical: [ Ru ( CO ) 3Cl2 ] 2; Chemical: CO; Chemical: NO