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Q.
Antibody is produced by :
Haryana PMTHaryana PMT 2005
Solution:
Antibody is produced by B-lymphocyte. Lymphocytes are critical for immune reactions and of two types: B-lymphocytes and T-lymphocytes. B-lymphocytes, upon contact with appropriate antigens, are transformed into plasma cells, which are responsible for the production of antibody. They produce, $20$ trillion antibodies per day.