15834
Pretreatment of mice with a phosphorylated prodrug of nitrobenzylmercaptopurine riboside , an inhibitor of mENT1 , significantly decreased brain exposure to tecadenoson compared with that of the untreated ( control ) group , suggesting involvement of mENT1 in transport of tecadenoson across the blood - brain barrier ( BBB ) .
 Chemical: nitrobenzylmercaptopurine; Chemical: tecadenoson; Chemical: tecadenoson
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: nitrobenzylmercaptopurine; Chemical: tecadenoson; Chemical: tecadenoson