12759
CD27+ B cells had the ability to produce IgE , which was increased by contact with CD70 transfectants , whereas CD27- B cells did not produce IgE .
 CD27+ B cells, IgE, IgE
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:
 CD27+ B cells, IgE, IgE