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Incidentally, Grf40 binds to linker for activation of T cells ( LAT ) possibly via its SH2 domain .
 SH2 domain, LAT, linker for activation of T cells, Grf40, T cells
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, LAT, linker for activation of T cells, Grf40, T cells