638
Thus the VLA-5 fibronectin receptor on CD4 cells can play a complementary role in CD3 - TCR -mediated signal transduction through its interaction with fibronectin .
 protein: CD3; protein: TCR; protein: VLA-5 fibronectin receptor; protein: fibronectin; cell line: CD4 cells; protein: fibronectin
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: CD3; protein: TCR; protein: VLA-5 fibronectin receptor; protein: fibronectin; cell line: CD4 cells; protein: fibronectin