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toxoid

n.
1.a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin

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Word of the Day

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    Idiom of the Day

    put (something) down to (something)
    to explain something as being caused by something else
    The police put the accident down to the bad road conditions at the time.



    1.
    She works ________ quickly

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    Fact
    When the Black Death swept across England one theory was that cats caused the plague. Thousands were slaughtered. Ironically, those that kept their cats were less affected, because they kept their houses clear of the real culprits, rats.      .. More >>
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