1796
The T cell activation is initiated by interaction of specific Ags with TCR , followed by activation of intracellular biochemical events leading to activation of several genes.
 protein: TCR; protein: Ags
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: TCR; protein: Ags