5718
Importantly, additional testing of a corresponding set of peptides covering the complete sequence of pp65 on 10 of these donors identified individuals whose CD8(+) T cells recognized IE-1 but not pp65 and vice versa, clearly illustrating that either protein may be a major target.
 cell type: CD8(+) T cells; protein: pp65; protein: IE-1; protein: pp65
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: CD8(+) T cells, pp65, IE-1, pp65 
Answer:
 cell type: CD8(+) T cells; protein: pp65; protein: IE-1; protein: pp65