12852
To determine whether BCL-6 mutations represent a tumor-associated phenomenon or reflect a physiologic mechanism, we screened single human tonsillar GC B cells for mutations occurring in the BCL-6 5'-noncoding region and in the Ig variable heavy chain sequences .
 DNA: Ig variable heavy chain sequences; protein: BCL-6; protein: BCL-6; cell type: human tonsillar GC B cells; DNA: BCL-6 5'-noncoding region
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: Ig variable heavy chain sequences, BCL-6, BCL-6, human tonsillar GC B cells, BCL-6 5'-noncoding region 
Answer:
 DNA: Ig variable heavy chain sequences; protein: BCL-6; protein: BCL-6; cell type: human tonsillar GC B cells; DNA: BCL-6 5'-noncoding region