14401
To determine whether the defect in the patient's T lymphocytes involved a trans-acting factor common to the affected lymphokine genes , we examined the ability of nuclear factors from the patient's T lymphocytes to bind response elements present in the regulatory region of IL2 .
 lymphokine genes, genes, nuclear factors, trans-acting factor, regulatory region, T lymphocytes, lymphokine, T lymphocytes, IL2
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:
 lymphokine genes, genes, nuclear factors, trans-acting factor, regulatory region, T lymphocytes, lymphokine, T lymphocytes, IL2