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Differentiate the following and give examples of each: (a) Innate and acquired immunity (b) Active and passive immunity

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(a) Innate and acquired immunity Innate immunity Acquired immunity 1. It is a non−pathogen specific type of defense mechanism. 1. It is a pathogen specific type of defense mechanism. 2. It is inherited from parents and protects the individual since birth. 2. It...
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(a) Innate and acquired immunity

 

Innate immunity

 

Acquired immunity

1.

It is a non−pathogen specific type of defense mechanism.

1.

It is a pathogen specific type of defense mechanism.

2.

It is inherited from parents and protects the individual since birth.

2.

It is acquired after the birth of an individual.

3.

It operates by providing barriers against the entry of foreign infectious agents.

3.

It operates by producing primary and secondary responses, which are mediated by B­−lymphocytes and T-lymphocytes.

4

It does not have a specific memory.

4

It is characterized by an immunological memory.

(b) Active and passive immunity

 

Active immunity

 

Passive immunity

1.

It is a type of acquired immunity in which the body produces its own antibodies against disease-causing antigens.

1.

It is a type of acquired immunity in which readymade antibodies are transferred from one individual to another.

2.

It has a long lasting effect.

2.

It does not have long lasting effect.

3.

It is slow. It takes time in producing antibodies and giving responses.

3.

It is fast. It provides immediate relief.

4.

Injecting microbes through vaccination inside the body is an example of active immunity.

4.

Transfer of antibodies present in the mother’s milk to the infant is an example of passive immunity.

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