title: Retraction: Endogenous IL-1R1 signaling is critical for cognate CD4+ T cell help for induction of in vivo type 1 and type 2 antipolysaccharide and antiprotein Ig isotype responses to intact Streptococcus pneumoniae, but not to a soluble pneumococcal conjugate vaccine.
authors.affiliation: Department of Pathology Uniformed Services University of the Health Sciences Bethesda, MD, USA.
authors.forename: Quanyi
authors.initials: Q
authors.lastname: Chen
authors.forename: Clifford M
authors.initials: CM
authors.lastname: Snapper
authors.forename: Goutam
authors.initials: G
authors.lastname: Sen