That's right, it's not sterile. The microbial profile of the placenta seems to overlap most closely with that of mom's mouth. WHAT?! How are mouth microbes getting to the placenta?
Through the blood! It's called hematogenous spread.
Hematogenous spread; and how Fetal immune cells (T-regs) learn to recognize mom's microbiome.
Here's a lovely diagram showing bacterial, viral, and fungal populations and comparing them in pre-term vs term babies.
A super simplified diagram of connection between mom's biome and baby's.
A scary diagram showing some negative side effects of damaged microbiota.
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