20801
To reveal novel insights into the inhibition of BCR - ABL tyrosine kinase , pharmacophore mapping studies were performed for a series of phenylaminopyrimidine - based ( PAP ) derivatives , including imatinib ( Gleevec ) .
 Chemical: tyrosine; Chemical: phenylaminopyrimidine; Chemical: PAP; Chemical: imatinib
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: tyrosine; Chemical: phenylaminopyrimidine; Chemical: PAP; Chemical: imatinib