20971
Since erythropoietin - producing hepatoma ( Eph ) - ephrin bidirectional signalling fine - tunes GSIS from pancreatic beta cells , we investigated Eph receptor tyrosine kinases ( RTK ) as potential drug targets for selectively increasing GSIS .
 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