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However, the transcription and synthesis of interleukin 2 and other delayed early cytokines were markedly attenuated by BCL-2 .
 cytokines, interleukin 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:
 cytokines, interleukin 2, BCL-2