13751
These data suggest that the inhibitory effect of CO on osteoclastogenesis is caused by impaired RANKL signaling through defective NF - kappa B activation and reduced levels of long - lasting ROS .
 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: CO