6544
After CD40 triggering , a similar activation of the NF-kappaB (but not of the AP-1 ) transcription factor complex occurred in both cell preparations.
 NF-kappaB, transcription factor complex, AP-1, CD40
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:
 NF-kappaB, transcription factor complex, AP-1, CD40