6591
TCR affinities were then indirectly estimated by blocking CD8 interaction with an anti-CD8 mAb .
 protein: CD8; protein: anti-CD8 mAb; 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: CD8, anti-CD8 mAb, TCR 
Answer:
 protein: CD8; protein: anti-CD8 mAb; protein: TCR