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Operation Ouch!

Series 5

Episode 7: Germ-Fighters

on CBBC HD

Available for 9 months

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 HD

About CBBC

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.