Inducible human yolk sac myeloid progenitors model myeloid ontogeny and enable tissue-resident macrophage replacement in vivo.
Tissue-resident macrophages (TRMs) are involved in the surveillance and maintenance of tissue homeostasis, yet their dysfunction is a hallmark of human diseases. Although mouse TRMs arise from sequential migrations of yolk sac progenitors, limited access to human embryonic tissue has hindered the study of the origin of...