The cancer-fighting multi-organ: 9 ways the placenta is amazing

The placenta forms in the first few weeks of pregnancy from both fetal and maternal cells, implanting on the wall of the uterus and enabling the fetus to get everything it needs to develop. Though it looks like an amorphous blob of tissue, it carries two separate but intimately connected blood vessel systems that enable the placenta to carry out the job of many organs, acting as a lung, liver, gut, kidney and hormone-producing endocrine system. It filters out waste products from the blood of the fetus, and provides it with antibodies for immune defence.

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