Anti-OVA antibody titers for mice treated with formulations of OVA, OVA that contained emulsified silicone oil microdroplets (OVA+SO), OVA that contained syringe-extracted silicone oil microdroplets (OVA+SO-S), and OVA that contained alum (OVA+Alum) at day 29 for IgG1 isotype (a), IgG2a isotype (b), IgG2b isotype (c), IgG2c isotype (d), IgG3 isotype (e) and IgM isotype (f). Each data point represents the titer value of an individual mouse. Bars represent the average titer of mice that responded within the group.