8261
Grf40 binds to the SH2 domain -containing leukocyte protein of 76 kD ( SLP-76 ) via its SH3 domain more tightly than Grb2 .
 SH2 domain -containing leukocyte protein, Grf40, SH2 domain, SLP-76, Grb2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 SH2 domain -containing leukocyte protein, Grf40, SH2 domain, SLP-76, Grb2