Acquired Immunity mediated by which of the following
Antibody formation by $T$ - lymphocytes
Antibody formation by $B$ - lymphocytes
$HCl$ by stomach
Bite by snake
What does the term 'memory' of the Immune system mean ?
Immunity tolerance developed by
Antigen is a substance which
Differentiate the following and give examples of each:
$(a)$ Innate and acquired immunity
$(b)$ Active and passive immunity
Passive immunity can be obtained by injecting