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The interleukin-10 (IL-10) receptor is another member of the IFN receptor family , but its ligand, IL-10 , has been reported to induce apoptosis in B-CLL cells .
 IFN receptor family, IL-10, B-CLL cells, interleukin-10 (IL-10) receptor
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:
 IFN receptor family, IL-10, B-CLL cells, interleukin-10 (IL-10) receptor