Give reasons :
(ii) Vaccination is based on the property of memory of immune system.

Read the following statements and select the correct ones. (i) Vaccine is a preparation (or suspension ) of a dead/attenuated pathogen of a disease which on inoculation ( or injection ) into a healthy person, provides temporary/permanent active immunity by inducing antibodies formation. (ii) Immunisation is the process by which the body produces antibodies against the vaccine preventable diseases through administration of specific vaccines. (iii) The principle of immunisation or vaccination is based on the property of 'memory' of the immune system. iv) If a person is infected with some deadly microbes to which quick immune response is required; in that case, we need to directly inject the performed antibodies or antitoxins e.g., in case of tetanus.

Read the following statements and select the right option : I. The spleen is a large bean-shaped organ, which mainly contains lymphocytes and phagocytic cells. II. The principal of vaccination is based on the property of memory of the immune system. III. The graft rejected or failure of organ transplantation is due to cell-mediated immunity . IV. The yellowish fluid colostrum has an abundant amount of lgA antibodies which provide active immunity to newborn babies.

Assertion : Principle of vaccination is based on the property of 'memory' of the immune system. Reason : In vaccination a preparation of antigenic protein of pathogens or inactivated/ weakened pathogen are introduced into the body.

Differentiate between the roles of B-lymphocytes and T-lymphocytes in generating immune responses. OR Principle of vaccination is bassed on the property of "memory" of the immune system. Taking one suitable example, justify the statement.

Read the given Statements regarding immunization and select the option that identifies the correct ones . I. The principal of vaccination is based on the memory of the immune system . II.The antibodies produced in the body against antigens neutralise the pathogenic agents before the actual infection. III. Hepatitis B vaccine is prepared by using a virus in recombination DNA technology. IV. Antibiotics are given directly in elicit a quick immune response.

The principle of immunisation or vaccination is based on which property of immune system

Life of the memory cells of immune system is

What does the term 'memory' of the immune system mean?

What does the term 'memory' of the immune system mean?

Life of the effector cells of immune system is