types of immunity

 Types of Immunity

1. Innate (natural) immunity or native immunity or inherited immunity.

Immunity by birth.

2. Acquired immunity (adaptive)

Immunity acquired after birth.

A. Innate immunity

Immunity ay birth.

1. Specific

Against specific antigen.

2. Non- specific

B. Acquired immunity 

1. Active 

Develop after entry of antigen.

a. Natural; occurance of disease, memory cells, next time already produce antibodies.

b. Artificial; acquired artificially by vaccination, memory based.

2. Passive 

Readymade antibodies enter the body.

a. Natural; develop in the fetus during pregnancy.

b. Artificial; 

Injection of antibodies