27360
Using low molecular weight inhibitors , we found that PDGF - BB - induced Fer activation is dependent on PDGFRbeta kinase activity , but not on the enzymatic activity of Src or Jak kinases .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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