CSF1R regulates the dendritic cell pool size in adult mice via embryo-derived tissue-resident macrophages

Abstract

Dendritic cells (DC) are important regulators of both innate and adaptive immunity, but how the DC pool is homeostatically maintained in vivo is unclear. Here the authors show that combined deficiency of FLT3 and CSF1R impedes the differentiation of spleen macrophages of embryonic origin that are required for DC homeostasis.