Tingible body macrophages arise from lymph node-resident precursors and uptake B cells by dendrites.

"Disclosures: The authors declare no competing interests exist."

"Z. Shulman is supported by European Research Council grant no. 101001613, Israel Science Foundation grant no. 1090/18, and the Morris Kahn Institute for Human Immunology. Z. Shulman is a member of the European Molecular Biology Organization Young Investigator Program. Z. Shulman is supported by grants from the Azrieli Foundation, the Moross Integrated Cancer Center, and Miel de Botton. N. Schwan has received funding from the Innovative Medicines Initiative 2 Joint Undertaking under grant agreement no. 101007799. The Joint Undertaking receives support from the European Union’s Horizon 2020 research and innovation program and European Federation of Pharmaceutical Industries and Associations."