7971
In uterine pregnancy , the ratio of BCL-2 to CD3 was 0.44 and 0.39 for CD56.
 BCL-2
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-2