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Immune system will not generate ‘memory’ in a person

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infected with small pox

vaccinated with tetanus toxins

injected with preformed antibodies

suffering with allergy

answer is C.

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Detailed Solution

Preformed antibodies are developed in an immunised donor (animals such as sheep, horse, etc.) by injecting toxins. These are injected to humans to destroy deadly toxins. They do not generate ‘memory’.

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