Innate lymphoid cells (ILCs) have a central role in innate defenses against pathogens,
lymphoid organogenesis, and tissue remodeling. They have been detected in human
decidua, however, their role in this tissue remains unclear. Successful pregnancy requires
an early inflammatory phase favoring implantation and tissue remodeling as well as a
subsequent regulatory phase to prevent fetal rejection and supporting neoangiogenesis.
Here, we show that, during the first trimester of pregnancy, neutrophils infiltrate decidua …