16911
Cobalt - protoporphyrin ( CoPP ) - dependent induction of heme oxygenase ( HO ) - 1 has been shown to protect the liver from I / R injury .
 Chemical: Cobalt - protoporphyrin; Chemical: CoPP; Chemical: heme
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: Cobalt - protoporphyrin; Chemical: CoPP; Chemical: heme