AUTHOR=Severinson Eva TITLE=Identification of the IgG1 Induction Factor (Interleukin 4) JOURNAL=Frontiers in Immunology VOLUME=5 YEAR=2014 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2014.00628 DOI=10.3389/fimmu.2014.00628 ISSN=1664-3224