26216
Suppression of nuclear factor erythroid 2 - related factor 2 via extracellular signal - regulated kinase contributes to bleomycin - induced oxidative stress and fibrogenesis .
 Chemical: bleomycin
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: bleomycin 
Answer:
 Chemical: bleomycin