13575
This study was undertaken to further analyze changes in cytokine production and intracellular signaling during anergy induction using high concentrations of native peptide ligand of tetanus toxoid ( TT )- and myelin basic protein (MBP)- specific human T cell lines .
 cytokine
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:
 cytokine