14265
Using monoclonal antibodies ( mAbs ) and flow cytometry, we studied a variety of surface receptors on lymphocyte subpopulations of workers with moderately increased body burdens of 2,3,7,8-tetrachlorodibenzo-p-dioxin ( TCDD ) and of other polychlorinated dibenzo-p-dioxins and dibenzofurans ( PCDD/PCDF ), expressed here as International-Toxicity Equivalencies ( I-TE ).
 mAbs, monoclonal antibodies, lymphocyte subpopulations, surface receptors
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:
 mAbs, monoclonal antibodies, lymphocyte subpopulations, surface receptors