Fig. 5
From: COVID-19 in pregnancy: placental pathological patterns and effect on perinatal outcome in five cases
CD15 immunoreactivity in placental tissue. Negativity for CD15 in case 1, both in vessels of stem villi and capillaries of terminal villi (Case 1, a × 100, Arrows: arteries, Arrowhead: venous vessel); Focal positivity in a venous vessel of stem villi and in the a few capillaries of terminal villi (Case 3: b × 100; Arrow: Venous vessel, Arrowheads: positive capillaries); negativity for CD15 in vessels of stem villi and positivity in many capillaries, of a focus of terminal villi (Case 4: c × 100; Arrows: arteries, Arrowhead: venous vessel)