2605
Lymphocytes of non-pregnant women , women with threatened pre-term delivery, and men showed equivalent levels: 3 +/- 1, 3 +/- 2 and 5 +/- 4 fmol/mg respectively.
 Lymphocytes
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:
 Lymphocytes