Regulation of T H 2 development by CXCR5 + dendritic cells and lymphotoxin-expressing B cells

In lymph nodes, cellular positioning can dictate the immune response. Lund and colleagues show that nematode infection triggers interactions between lymphotoxin-producing B cells and CXCR5 + dendritic cells and CD4 + T cells to initiate T helper type 2 responses.