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B
False
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Solution
The correct option is A True
Antibodies:
Antibody (Ab), also known as an immunoglobulin (Ig), is a large Y-shaped protein generated by the immune system in response to foreign particles called antigens.
Antibody provides long-term protection against pathogens because it persists for years after the presence of the antigen.
They also act as the first line of defense for mucosal surfaces.