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In addition to Bcl-x , a known CD40 -regulated antiapoptotic molecule , we identified a related antiapoptotic molecule , A1/Bfl-1 , as a CD40 -inducible gene .
 CD40, Bcl-x, CD40 -regulated antiapoptotic molecule, A1/Bfl-1, CD40 -inducible gene, CD40, antiapoptotic molecule
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:
 CD40, Bcl-x, CD40 -regulated antiapoptotic molecule, A1/Bfl-1, CD40 -inducible gene, CD40, antiapoptotic molecule