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What is the immune system? - Global challenges: Video playlist - BBC Bitesize
Sophie Ward explains how the immune system defends the body from disease.
↗ https://www.bbc.co.uk/bitesize/topics/z62knk7/watch/zp9vh4jSophie Ward explains how the immune system defends the body from disease.
↗ https://www.bbc.co.uk/bitesize/topics/z62knk7/watch/zp9vh4j