381
We now demonstrate that B7 , but not LFA-3 , strongly costimulated IL-2 transcription and mRNA expression in CD4+ T cells .
 B7, LFA-3, IL-2, CD4+ 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:
 B7, LFA-3, IL-2, CD4+ T cells