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Operation Ouch!

Series 5

Episode 7: Germ-Fighters

on CBBC HD

Available for 10 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.