Question

What are the different types of immunity and their sources?

Answer 1

Innate or natural immunity
Acquired immunity
Innate or Natural immunity:
Immunity with which an individual is born is called innate or natural immunity.
Innate immunity is provided by various components such as Skin, mucus membrane, Phagocytic cells etc
Innate immunity acts as first line of defense to particular microorganisms.

Acquired or Developed immunity:
Immunity which is developed later in life after microbial infection in host is called as Acquired or developed immunity. For example, If an individual is infected with chicken pox virus, he/she become resistant to same virus in later life.
Acquired immunity is provided by Antibodies and certain T-lymphocytes.
Components of acquired immunity such as Antibodies and T- cells are specific to particular microorganism. Therefore acquired immunity is also known as Specific immunity