9439
Finally, although it has been reported that EBNA3C can upregulate CD21 in some B cells , we were unable to demonstrate any effect of EBNA3C on reporter plasmids which contain the CD21 promoter .
 cell type: B cells; DNA: CD21 promoter; protein: CD21; protein: EBNA3C; protein: CD21; protein: EBNA3C; DNA: reporter plasmids
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: B cells, CD21 promoter, CD21, EBNA3C, CD21, EBNA3C, reporter plasmids 
Answer:
 cell type: B cells; DNA: CD21 promoter; protein: CD21; protein: EBNA3C; protein: CD21; protein: EBNA3C; DNA: reporter plasmids