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The bcl-2 gene , a repressor of lymphocyte death , is perhaps the best understood of the programmed cell death associated genes.
 DNA: bcl-2 gene; cell type: lymphocyte
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 DNA: bcl-2 gene; cell type: lymphocyte