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प्रश्न
List four important features of adaptive immunity.
लघु उत्तर
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उत्तर
(i) Pathogen specificity - recognises a vast variety of antigens.
(ii) Discrimination between self and non-self.
(iii) Memory - retains the memory of the first encounter and gives a rapid, heightened secondary response.
(iv) It is acquired after birth and supplements the protection provided by innate immunity.
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