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Here we demonstrate a link between the p38 pathway and a member of the myocyte-enhancer factor 2 (MEF2) group of transcription factors .
 myocyte-enhancer factor 2 (MEF2) group, transcription factors, p38
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:
 myocyte-enhancer factor 2 (MEF2) group, transcription factors, p38