7784
Cellular Csk was associated with several phosphoproteins , some of which were interacting with the Csk SH2 domain .
 Cellular Csk, Csk, SH2 domain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Cellular Csk, Csk, SH2 domain