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What is immunity?

Answer :

Immunity is the ability of the body to fight against diseases.

Infectious organisms that enters the body and produces toxins.

These toxins are called antigens.

The immune system of our body includes blood plasma, lymph and lymphocytes.

These cells analyse the antigens and produce suitable protein substances called antibodies to kill the antigen in order to develop immunity.

Types of Immunity:

i) Natural or Innate Immunity: immunity present in the body since birth.

ii) Acquired or Specific Immunity: The immunity developed after birth against some

Active acquired immunity: This kind of immunity is developed by our body, during the first infection of any pathogen. The antibodies produced in the blood remain for a long period and kill the similar pathogens.

Passive Acquired Immunity: In this type of immunity, a ready-made antibody is given to develop immunity is introduced from outside, instead of stimulating the body to produce antibody with antigenic stimulus.

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