1474
The transcriptional activity of the IL-2 promoter requires T-cell costimulation delivered by the TCR and the auxiliary receptor CD28 .
 protein: auxiliary receptor CD28; protein: IL-2; DNA: IL-2 promoter; protein: TCR; cell type: T-cell
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: auxiliary receptor CD28; protein: IL-2; DNA: IL-2 promoter; protein: TCR; cell type: T-cell