The effects of particulate ambient air pollution on the murine umbilical cord and its vessels: A quantitative morphological and immunohistochemical study

► We assessed umbilical cord morphology of fetuses exposed to air pollution. ► Intrauterine exposure to air pollution affects umbilical cord morphology. ► Fetuses exposed to air pollution presented thinner umbilical cords. ► Oxidative stress was increased in umbilical cord of exposed fetuses. ► An imbalance of endogenous regulators of the vascular tone was observed.