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An Intiative by Sri Chaitanya
a
Emphysema and cancer
b
Cancer and viral infections
c
Emphysema and AIDS
d
Cancer and bacterial infections
answer is B.
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Detailed Solution
Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection.Biological response modifiers such as a-interferon activates immune system and helps in destroying the tumor.