486
Moreover, monocytes express a novel IL-10 -stimulated STAT protein with an M(r) of 70 kDa that is recognized by the anti- STAT3 Ab but is not observed in T cells .
 STAT3, T cells, 70 kDa, IL-10, monocytes, IL-10 -stimulated STAT protein, anti- STAT3 Ab
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:
 STAT3, T cells, 70 kDa, IL-10, monocytes, IL-10 -stimulated STAT protein, anti- STAT3 Ab