Fig. 4

Effects of microplastics on placental inflammation in pregnant mice. (A-B) Analysis of mRNA expression levels of inflammatory cytokines and chemokines in placenta of pregnant mice. (C) H&E stained section of placental tissue (Labyrinth zone) with a scale of 100 μm. The red arrows show necrotic foci. Histopathology and morphometry of the placental tissue performed by a blinded scorer. Letters a-d indicate significant differences (P < .05)