A new study challenges the idea that the placenta has a microbiome

Scientists traced what microbes they did detect in tissue samples to lab tools and birth canals

developing fetus illsutration

NOT SO GERMY  In a recent study, much of the bacteria in placental samples (placenta and developing fetus illustrated) came from lab equipment, wash solutions and the vagina, researchers say.

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Contrary to earlier reports, the human placenta is largely free of microbes, a study finds.