10009
Cat proteins are tyrosine - phosphorylated when co - expressed in cells with the focal adhesion kinase Fak and Src .
 Cat proteins, focal adhesion kinase, Fak, Src
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Cat proteins, focal adhesion kinase, Fak, Src