Question

2. Define antigen and give an example of the same.

Answer 1

Explanation:

any foreign thing which enters and make our immune system weak that is antigens and virus is good example of that

Answer 2

ANSWER :-

Definition :-

Antigens can simply be defined as substances which, when introduced into the body, stimulate the production of antibodies.

Example :-

Some substances produced by some viruses and bacteria.

Extra Information :-

• Antigens consist of proteins, polysaccharides or nucleic acids.

• Antigenic determinants or epitopes are the components of antigens.

• Each antigen carries many epitopes.

• Antigens are of two types, namely- Complete antigens and Incomplete antigens.

• Incomplete antigens are also known as partial antigens or "Haptens".

• The antigens which are present on the body's own cells are called "Self antigens".

• Self antigens are also known as "Autoantigens".

• The antigens on the non-self cells are called "Foreign antigens".

• Foreign antigens are also known as "Nonself antigens".