Why does the immune system not attack foetuses? - a podcast by Dr Chris Smith

This week we've been sequencing Lorianna's question: if babies have different genetic sequences from their mother, and are technically foreign objects in the womb, why doesn't the mother's immune system attack? Ziyad Yehia asked Dr Lucy Fairclough, an immunologist from Nottingham University to find out... Like this podcast? Please help us by supporting the Naked Scientists

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