Clips from Operation Ouch! Dr Chris and Dr Xand explain what happens when you break bones and how your bones are actually a blood-making factory.
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Clips from Operation Ouch! Dr Chris and Dr Xand explain what happens when you break bones and how your bones are actually a blood-making factory.
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.
