5568
MHC class II density on the APC was modified using DQ2 homo -and hetero zygous B-LCLs as APCs , however this variation of MHC concentration had no effect on T cell proliferation .
 protein: MHC class II; cell type: APC; cell type: APCs; cell type: T cell
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: MHC class II, APC, APCs, T cell 
Answer:
 protein: MHC class II; cell type: APC; cell type: APCs; cell type: T cell