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To examine the behavior of Bcl-2 in normal cells , T cell blasts were transiently transfected with Bcl-2 and related gene products to determine the effect on apoptotic signaling.
 gene products, T cell blasts, normal cells, Bcl-2, Bcl-2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 gene products, T cell blasts, normal cells, Bcl-2, Bcl-2