NewslettersEndothelial Cell NewsMouse Placenta Fetal Macrophages Arise from Endothelial Cells outside the PlacentaBy Noshin Noorjahan - December 5, 20220244Using a new Hoxa13Cre allele that labeled all placental endothelial cells, investigators demonstrated that mouse placental fetal macrophages did not arise from placental endothelium.[Developmental Cell]Abstract