On the cover: Targeting Ag to Clec9A on dendritic cells results in early germinal center formation. Histology of a spleen section from a C57BL/6 mouse, 11 d postimmunization with hapten nitrophenol–conjugated anti-Clec9A monoclonal Ab. Immunization results in increased germinal center (blue) formation in the spleen B cell follicles (red). Park, H.-Y., A. Light, M. H. Lahoud, I. Caminschi, D. M. Tarlinton, and K. Shortman. 2013. Evolution of B cell responses to Clec9A-targeted antigen. J. Immunol. 191: 4919–4925.