Question:

What is the body's natural barriers against disease?

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I have GCSE homework and i can't figure it out. i'm in year ten and i have the pink B2 keeping healthy book. can anyone help? All answers appreciated :) thankyou x

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  1. is it antibodies? http://dictionary.reference.com/browse/a...




  2. your skin

    nose hair

    red and white blood cells

    saliva

    liver

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