6831
Th2 cells could be induced in all healthy controls by priming with anti-CD28 in the absence of TCR ligation .
 cell line: Th2 cells; protein: anti-CD28; protein: TCR
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: Th2 cells, anti-CD28, TCR 
Answer:
 cell line: Th2 cells; protein: anti-CD28; protein: TCR