13677
These data provide further information on the molecular events occurring in immune cells generated through in vivo and in vitro administration of IL-2 , and further document that there is not a precise congruence between PBMC activated in vivo and in vitro by IL-2 .
 immune cells, IL-2, IL-2, PBMC
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:
 immune cells, IL-2, IL-2, PBMC