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Which of the following is not an example of artificially acquired passive immunity?

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Important Questions on Human Health and Disease

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Which of the following options is incorrect with respect to secondary lymphoid organs?
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Read the following statements:

(i) Drugs like adrenaline, antihistamines and steroids reduce the symptoms of allergy.

(ii) In autoimmune diseases, the immune system has the ability to distinguish the foreign organisms from the self.

(iii) The receptors present on B–lymphocytes that recognise discrete sites on the antigen are the antibodies.

(iv) Interferons are the group of proteins produced by viral infected cells.
 

Which of the above statements are correct?

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Which of the following cells can non-specifically kill virus-infected cells and some tumour cells of the body by creating perforin-lined pores in the plasma membrane of the target cells?