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Four P-like elements are required for optimal transcription of the mouse IL-4 gene : involvement of a distinct set of nuclear factor of activated T cells and activator protein-1 family proteins .
 nuclear factor of activated T cells, P-like elements, mouse IL-4 gene, T cells, activator protein-1 family proteins
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:
 nuclear factor of activated T cells, P-like elements, mouse IL-4 gene, T cells, activator protein-1 family proteins