Humoral response to OVA in wt mice (filled circles) and

Lsp1^−/− mice (open circles).OVA-specific IgM and IgG titers at various time points after immunization are illustrated. Each circle represents an individual mouse and horizontal lines are used to indicate means. Antibody titers are expressed as arbitrary units (AU; see “Materials and methods”). OVA-specific antibodies were not detectable in any pre-immune sera tested.