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Finally, oxidants are believed to promote intestinal epithelial cell apoptosis , and the B-cell lymphoma/leukemia-2 gene product is believed to inhibit this phenomenon in an antioxidant-dependent manner .
 B-cell lymphoma/leukemia-2 gene product, intestinal epithelial cell
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:
 B-cell lymphoma/leukemia-2 gene product, intestinal epithelial cell