13742
Carbon monoxide ( CO ) has been shown to have remarkable therapeutic value at low dosage by suppressing inflammation via inhibitory effects on macrophages , which are also precursors of osteoclasts ( OC ) .
 Chemical: Carbon monoxide; Chemical: CO
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: Carbon monoxide; Chemical: CO