An 'antigen' is
That which acts with plasma
That which opposes the action of antibody
The stimulus for antibody production
The antibody only
What are the two corollaries related to immune system ?
Definitions / Explanation : Pathogen & Immunity
Acquired Immunity mediated by which of the following
Write a note on lymphoid organs.
Definitions / Explanation : $B$-lymphocytes & $T$-lymphocytes