Adoptive transfer of DCN-induced macrophages results in aberrant placental development. (A) Schematic representation of mouse placental development on GD10.5, consisting of three compartments: maternal decidua, junctional zone, and labyrinth zone. (B-U) Hematoxylin and eosin (H&E)-stained cross sections of placentas from different groups on GD10.5. Red, blue, and green boxes (B, F, J, N, and R) indicate regions of higher magnification in panels to the right depicting the (C, G, K, O, and S) decidua, (D, H, L, P, and T) junctional zone, and (E, I, M, Q, and U) labyrinth zone, respectively. D: decidua; Jz: junctional zone; Lab: labyrinth zone; m: maternal blood sinusoid; f: fetal capillary. Scale bar: 500 or 50 µm.