2939
Expression of Bcl-xL and adenovirus E1B 19K did not interfere with anti- Fas killing .
 Bcl-xL, adenovirus E1B 19K, Fas
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:
 Bcl-xL, adenovirus E1B 19K, Fas