The doctors reveal the amazing army of germ fighters that make up your immune system, and they find out just how difficult it is to clean a baby's incubator. Show more
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The doctors reveal the amazing army of germ fighters that make up your immune system, and they find out just how difficult it is to clean a baby's incubator. Show more
CBBC is the BBC's multiplatform offering for 6-12 year olds bringing the very best drama, entertainment and factual programmes to its young viewers.
