24199
Overexpression of neurotrophin receptors of the tyrosine kinase ( Trk ) family has been identified as a major prognostic and biological factor for this disease .
 Chemical: tyrosine
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