The yellowish fluid "colostrum" secreted by mammary glands of mother during the initial days of lactation has abundant antibodies ($lgA$) to protect the infant. This type of immunity is called as
Autoimmunity
Passive immunity
Active immunity
Acquired immunity
Spleen is
Antibodies are produced by
What are recombinant $DNA$ vaccines ? Give two examples of such vaccines. Discuss their advantages.
$T$- Lymphocytes originate from
Which of the following will be included under innate immunity?