Fig. 4. B cells are increased in lungs of AuNP-M2e+sCpG vaccinated mice, and respond rapidly to in vitro restimulation with AuNP-M2e.
B cell frequencies and CD86 expression was determined by flow cytometry. Hematopoietic cells were identified as CD45+ cells, and B cells as CD45+CD19+B220+CD3–cells. Study included two groups (n=5 per group, vaccinated and naïve). (A) Average frequency and standard deviation of B cells in the lungs, spleens and bone marrow (BM) of naïve vs. AuNP-M2e+sCpG vaccinated donor mice, regardless of their in vitro re-stimulation. (B) CD86 expression was determined on B cells isolated from naïve or AuNP-M2e+sCpG vaccinated donor lungs after 96 hours of media control or AuNP-M2e restimulation in vitro.