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SH2 domain-containing protein 76 ( SLP-76 ) interacts with the guanine nucleotide exchange factor Vav to activate the nuclear factor of activated cells ( NF-AT ), and its expression is required for normal T cell development .
 SLP-76, nuclear factor of activated cells, Vav, guanine nucleotide exchange factor, NF-AT, SH2 domain-containing protein 76, T cell
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:
 SLP-76, nuclear factor of activated cells, Vav, guanine nucleotide exchange factor, NF-AT, SH2 domain-containing protein 76, T cell