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The differentiating agent retinoic acid ( RA ) has been previously reported to interfere with 12-O-tetradecanoyl-phorbol-13-acetate ( TPA )/ Ca(2+) -induced signals for the regulation of the -96 to -66-bp octamer motif found in the enhancer for the interleukin (IL)-2 gene , which encodes a major T lymphocyte growth factor .
 T lymphocyte growth factor, interleukin (IL)-2 gene, -96 to -66-bp octamer motif
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:
 T lymphocyte growth factor, interleukin (IL)-2 gene, -96 to -66-bp octamer motif