Operation Ouch! (2012) | Season 4

1 How Your Nerves Work

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2 Can I Borrow Some Of Your Blood

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3 Who Stole The Milk

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4 What's in your Diarrhoea?

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5 The Big Skin Mystery

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6 Superhero Kidneys

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7 Fire in the Lab!

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8 Before You Were Born

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9 Best Of...

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10 Don't Panic About Puberty (Special)

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