Fig. 2
From: Placental pathology of the third trimester pregnant women from COVID-19
H&E and Immunohistochemical staining of inflammatory cells and Hofbauer cells of case 8. a, mild acute intervillositis was presented, the inflammatory infiltration is foci-like and consists of several neutrophils, no trophoblast necrosis and prominent perivillous fibrin deposition was found in the intervillous space. b and c CD3 (b) and CD20 (c) staining revealed only occasional infiltration of T lymphocytes and B lymphocytes in the middle of terminal villi (Envision, Original magnifications × 200). d, CD15 staining revealed several neutrophils in the intervillous space. e and f, CD68 (e) and CD163 (f) revealed scanty histiocytes in the intervillous space (red arrows) and none prominently increased numbers of Hofbauer cells present in the stroma of all villi (Envision, original magnifications × 200)