Interleukin-21: a double-edged sword with therapeutic ...
https://www.ncbi.nlm.nih.gov/pubmed/24751819
Epub 2014 Apr 22. Interleukin-21: a double-edged sword with therapeutic potential. Spolski R(1), Leonard WJ(1). Author information: (1)Laboratory of Molecular Immunology, National Heart, Lung, and Blood Institute (NHLBI), US National Institutes of Health, Bethesda, Maryland 20892, USA.