11959
The binding of the A6H mAb induced a costimulatory signal in anti-CD3 activated T cells .
 A6H mAb, anti-CD3 activated 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:
 A6H mAb, anti-CD3 activated T cells